diff --git a/tesseract_common/src/resource_locator.cpp b/tesseract_common/src/resource_locator.cpp
index ef1719337d6..228c4cda798 100644
--- a/tesseract_common/src/resource_locator.cpp
+++ b/tesseract_common/src/resource_locator.cpp
@@ -230,11 +230,14 @@ tesseract_common::Resource::Ptr SimpleLocatedResource::locateResource(const std:
   tesseract_common::fs::path path(url);
   if (path.is_relative())
   {
-    auto last_slash = url_.find_last_of(fs::path::preferred_separator);
-    if (last_slash == std::string::npos)
+    // Find the last occurrences of both separators
+    std::size_t last_slash = url_.find_last_of('/');
+    std::size_t last_backslash = url_.find_last_of('\\');
+    std::size_t last_separator = std::max(last_slash, last_backslash);
+    if (last_separator == std::string::npos)
       return nullptr;
 
-    std::string url_base_path = url_.substr(0, last_slash);
+    std::string url_base_path = url_.substr(0, last_separator);
     std::string new_url = url_base_path + std::string(1, fs::path::preferred_separator) + path.filename().string();
     return parent_->locateResource(new_url);
   }
diff --git a/tesseract_common/test/tesseract_common_unit.cpp b/tesseract_common/test/tesseract_common_unit.cpp
index 65b46da38e8..55858756a4d 100644
--- a/tesseract_common/test/tesseract_common_unit.cpp
+++ b/tesseract_common/test/tesseract_common_unit.cpp
@@ -2654,7 +2654,7 @@ TEST(TesseractCommonUnit, YamlBasicIncludeTest)  // NOLINT
   // Create test files
   createTestYamlWithIncludeDirectivesFile(test_dir + "main.yaml", R"(
 key1: value1
-key2: !include ./included.yaml
+key2: !include included.yaml
 )");
   createTestYamlWithIncludeDirectivesFile(test_dir + "included.yaml", R"(
 included_key1: included_value1
@@ -2691,10 +2691,10 @@ TEST(TesseractCommonUnit, YamlIncludeNestedIncludesTest)  // NOLINT
   // Create test files
   createTestYamlWithIncludeDirectivesFile(test_dir + "main.yaml", R"(
 key1: value1
-key2: !include ./included.yaml
+key2: !include included.yaml
 )");
   createTestYamlWithIncludeDirectivesFile(test_dir + "included.yaml", R"(
-nested_key1: !include ./nested.yaml
+nested_key1: !include nested.yaml
 )");
   createTestYamlWithIncludeDirectivesFile(test_dir + "nested.yaml", R"(
 deep_key1: deep_value1
@@ -2728,7 +2728,7 @@ TEST(TesseractCommonUnit, YamlIncludeSequenceIncludesTest)  // NOLINT
   createTestYamlWithIncludeDirectivesFile(test_dir + "main.yaml", R"(
 key1:
   - item1
-  - !include ./included.yaml
+  - !include included.yaml
 )");
   createTestYamlWithIncludeDirectivesFile(test_dir + "included.yaml", R"(
 - included_item1
@@ -2765,7 +2765,7 @@ TEST(TesseractCommonUnit, YamlIncludeSequenceIncludesMapTest)  // NOLINT
   createTestYamlWithIncludeDirectivesFile(test_dir + "main.yaml", R"(
 key1:
   - item1
-  - !include ./included.yaml
+  - !include included.yaml
 )");
   createTestYamlWithIncludeDirectivesFile(test_dir + "included.yaml", R"(
 keyA: valueA
@@ -2803,7 +2803,7 @@ TEST(TesseractCommonUnit, YamlIncludeMissingIncludeFileTest)  // NOLINT
 
   // Create a test file
   createTestYamlWithIncludeDirectivesFile(test_dir + "main.yaml", R"(
-key1: !include ./missing.yaml
+key1: !include missing.yaml
 )");
 
   // Attempt to load the main file and expect an exception