diff --git a/parsers/creation/contentindexparser.py b/parsers/creation/contentindexparser.py
index 11f2cc6..6a0d7e9 100644
--- a/parsers/creation/contentindexparser.py
+++ b/parsers/creation/contentindexparser.py
@@ -142,8 +142,8 @@ def map_template_arguments_to_context(self, arg_defs, args, context):
 		for arg_def, arg in zip(arg_defs, args + args_padding):
 			if arg_def.name in context:
 				raise ValueError(f'Template argument "{arg_def.name}" doubly defined in context')
-			arg_value = arg or arg_def.default_value
-			if not arg_value:
+			arg_value = arg if arg != '' else arg_def.default_value
+			if arg_value == '':
 				raise ValueError(f'Required template argument "{arg_def.name}" not provided')
 			if arg_def.type == 'sheet':
 				context[arg_def.name] = self.data_sheets[arg_value]