diff --git a/doc/changes/changes_0.1.0.md b/doc/changes/changes_0.1.0.md
index f0da0875..dd3a746f 100644
--- a/doc/changes/changes_0.1.0.md
+++ b/doc/changes/changes_0.1.0.md
@@ -50,6 +50,7 @@ Code name:
 * #184: Updated micromamba to the latest version 2.0.0
 * #176: Updated usage of `exasol-bucketfs` to new API
 * #185: Removed directory and script for building SLC AAF
+* #191: Renamed UDF json element "parameters" to "parameter"
 
 ### Documentation
 
diff --git a/exasol_advanced_analytics_framework/lua/src/query_loop.lua b/exasol_advanced_analytics_framework/lua/src/query_loop.lua
index d7be3198..7d628844 100644
--- a/exasol_advanced_analytics_framework/lua/src/query_loop.lua
+++ b/exasol_advanced_analytics_framework/lua/src/query_loop.lua
@@ -46,7 +46,7 @@ function M.prepare_init_query(arguments, meta)
     local temporary_name_prefix <const> = _generate_temporary_name_prefix(meta)
 
     local query_handler <const> = arguments_with_defaults['query_handler']
-    local params <const> = query_handler['parameters']
+    local param <const> = query_handler['parameter']
     local factory_class <const> = query_handler["factory_class"]
     local factory_class_module <const> = factory_class['module']
     local factory_class_name <const> = factory_class['name']
@@ -64,7 +64,7 @@ function M.prepare_init_query(arguments, meta)
             temporary_schema_name,
             factory_class_name,
             factory_class_module,
-            params)
+            param)
     local query <const> = string.format("SELECT %s%s", full_qualified_udf_name, udf_args)
     return query
 end
diff --git a/exasol_advanced_analytics_framework/lua/test/test_exasol_tools.lua b/exasol_advanced_analytics_framework/lua/test/test_exasol_tools.lua
index 5568d0e1..6206310a 100644
--- a/exasol_advanced_analytics_framework/lua/test/test_exasol_tools.lua
+++ b/exasol_advanced_analytics_framework/lua/test/test_exasol_tools.lua
@@ -28,7 +28,7 @@ function test_exasol_script_tools.test_parse_arguments_query_correct_with_udf()
                 schema = "UDF_SCHEMA",
                 name = "UDF_NAME"
             },
-            parameters = "params"
+            parameter = "param"
         },
     }
     local json_str = json.encode(expected_table)
diff --git a/exasol_advanced_analytics_framework/lua/test/test_query_handler_runner.lua b/exasol_advanced_analytics_framework/lua/test/test_query_handler_runner.lua
index bed40e45..801113fd 100644
--- a/exasol_advanced_analytics_framework/lua/test/test_query_handler_runner.lua
+++ b/exasol_advanced_analytics_framework/lua/test/test_query_handler_runner.lua
@@ -21,12 +21,12 @@ test_query_handler_runner = {
                     schema = "UDF_SCHEMA",
                     name = "UDF_NAME"
                 },
-                parameters = "params"
+                parameter = "param"
             },
         },
         query = "SELECT UDF_SCHEMA.UDF_NAME(" ..
                 "0,'bfs_conn','directory','db_name_1122334455_1','temp_schema'," ..
-                "'cls_name','package.module','params')",
+                "'cls_name','package.module','param')",
         return_query_result = {
             { nil },
             { nil },
diff --git a/exasol_advanced_analytics_framework/lua/test/test_query_loop.lua b/exasol_advanced_analytics_framework/lua/test/test_query_loop.lua
index c1326f0f..b3c39679 100644
--- a/exasol_advanced_analytics_framework/lua/test/test_query_loop.lua
+++ b/exasol_advanced_analytics_framework/lua/test/test_query_loop.lua
@@ -52,12 +52,12 @@ test_query_loop = {
                     schema = "UDF_SCHEMA",
                     name = "UDF_NAME"
                 },
-                parameters = "params"
+                parameter = "param"
             },
         },
         query = "SELECT UDF_SCHEMA.UDF_NAME(" ..
                 "0,'bfs_conn','directory','db_name_1122334455_1','temp_schema'," ..
-                "'cls_name','package.module','params')"
+                "'cls_name','package.module','param')"
     },
     correct_without_udf = {
         args = {
@@ -73,12 +73,12 @@ test_query_loop = {
                     name = "cls_name",
                     module = "package.module"
                 },
-                parameters = "params"
+                parameter = "param"
             },
         },
         query = "SELECT script_schema.AAF_QUERY_HANDLER_UDF(" ..
                 "0,'bfs_conn','directory','db_name_1122334455_1','temp_schema'," ..
-                "'cls_name','package.module','params')"
+                "'cls_name','package.module','param')"
     },
     incorrect_without_udf = {
         args = {
@@ -87,7 +87,7 @@ test_query_loop = {
                     name = "cls_name",
                     module = "package.module"
                 },
-                parameters = "params"
+                parameter = "param"
             },
         },
     },
@@ -101,7 +101,7 @@ test_query_loop = {
                 schema_name = "temp_schema"
             },
             query_handler = {
-                parameters = "params"
+                parameter = "param"
             },
         },
     }
diff --git a/exasol_advanced_analytics_framework/resources/outputs/create_query_loop.sql b/exasol_advanced_analytics_framework/resources/outputs/create_query_loop.sql
index ad98bc47..811a9df1 100644
--- a/exasol_advanced_analytics_framework/resources/outputs/create_query_loop.sql
+++ b/exasol_advanced_analytics_framework/resources/outputs/create_query_loop.sql
@@ -501,7 +501,7 @@ function M.prepare_init_query(arguments, meta)
     local temporary_name_prefix <const> = _generate_temporary_name_prefix(meta)
 
     local query_handler <const> = arguments_with_defaults['query_handler']
-    local params <const> = query_handler['parameters']
+    local param <const> = query_handler['parameter']
     local factory_class <const> = query_handler["factory_class"]
     local factory_class_module <const> = factory_class['module']
     local factory_class_name <const> = factory_class['name']
@@ -519,7 +519,7 @@ function M.prepare_init_query(arguments, meta)
             temporary_schema_name,
             factory_class_name,
             factory_class_module,
-            params)
+            param)
     local query <const> = string.format("SELECT %s%s", full_qualified_udf_name, udf_args)
     return query
 end
diff --git a/exasol_advanced_analytics_framework/udf_framework/query_handler_runner_udf.py b/exasol_advanced_analytics_framework/udf_framework/query_handler_runner_udf.py
index 2f805234..6338c122 100644
--- a/exasol_advanced_analytics_framework/udf_framework/query_handler_runner_udf.py
+++ b/exasol_advanced_analytics_framework/udf_framework/query_handler_runner_udf.py
@@ -60,7 +60,7 @@ class UDFParameter:
     temporary_schema_name: Optional[str] = None
     python_class_name: Optional[str] = None
     python_class_module: Optional[str] = None
-    parameters: Optional[str] = None
+    parameter: Optional[str] = None
 
 
 class QueryHandlerStatus(Enum):
@@ -181,7 +181,7 @@ def _get_parameter(self, ctx):
                 temporary_schema_name=ctx[4],
                 python_class_name=ctx[5],
                 python_class_module=ctx[6],
-                parameters=ctx[7])
+                parameter=ctx[7])
         else:
             self.parameter = UDFParameter(
                 iter_num=iter_num,
@@ -214,7 +214,7 @@ def _create_state(self) -> QueryHandlerRunnerState:
         )
         module = importlib.import_module(self.parameter.python_class_module)
         query_handler_factory_class = getattr(module, self.parameter.python_class_name)
-        query_handler_obj = query_handler_factory_class().create(self.parameter.parameters, context)
+        query_handler_obj = query_handler_factory_class().create(self.parameter.parameter, context)
         query_handler_state = QueryHandlerRunnerState(
             top_level_query_handler_context=context,
             query_handler=query_handler_obj,
diff --git a/tests/integration_tests/with_db/test_query_loop_integration.py b/tests/integration_tests/with_db/test_query_loop_integration.py
index 3a41e300..4f867cec 100644
--- a/tests/integration_tests/with_db/test_query_loop_integration.py
+++ b/tests/integration_tests/with_db/test_query_loop_integration.py
@@ -32,7 +32,7 @@ def test_query_loop_integration_with_one_iteration(
                     "schema": schema_name,
                     "name": "AAF_QUERY_HANDLER_UDF"
                 },
-                "parameters": TEST_INPUT
+                "parameter": TEST_INPUT
             },
             "temporary_output": {
                 "bucketfs_location": {
@@ -68,7 +68,7 @@ def test_query_loop_integration_with_one_iteration_with_not_released_child_query
                     "schema": schema_name,
                     "name": "AAF_QUERY_HANDLER_UDF"
                 },
-                "parameters": TEST_INPUT
+                "parameter": TEST_INPUT
             },
             "temporary_output": {
                 "bucketfs_location": {
@@ -104,7 +104,7 @@ def test_query_loop_integration_with_one_iteration_with_not_released_temporary_o
                     "schema": schema_name,
                     "name": "AAF_QUERY_HANDLER_UDF"
                 },
-                "parameters": TEST_INPUT
+                "parameter": TEST_INPUT
             },
             "temporary_output": {
                 "bucketfs_location": {
@@ -151,7 +151,7 @@ def test_query_loop_integration_with_two_iteration(
                     "schema": schema_name,
                     "name": "AAF_QUERY_HANDLER_UDF"
                 },
-                "parameters": TEST_INPUT
+                "parameter": TEST_INPUT
             },
             "temporary_output": {
                 "bucketfs_location": {