diff --git a/azure_functions_worker/functions.py b/azure_functions_worker/functions.py
index 292fe485..b8302544 100644
--- a/azure_functions_worker/functions.py
+++ b/azure_functions_worker/functions.py
@@ -136,14 +136,14 @@ def validate_function_params(params: dict, bound_params: dict,
         if set(params) - set(bound_params):
             raise FunctionLoadError(
                 func_name,
-                'the following parameters are declared in Python but '
-                f'not in function.json: {set(params) - set(bound_params)!r}')
+                'the following parameters are declared in function parameter but '
+                f'not in trigger annotation: {set(params) - set(bound_params)}')
 
         if set(bound_params) - set(params):
             raise FunctionLoadError(
                 func_name,
-                f'the following parameters are declared in function.json but '
-                f'not in Python: {set(bound_params) - set(params)!r}')
+                f'the following parameters are declared in trigger annotation but '
+                f'not in faction parameter: {set(bound_params) - set(params)}')
 
         input_types: typing.Dict[str, ParamTypeInfo] = {}
         output_types: typing.Dict[str, ParamTypeInfo] = {}
diff --git a/tests/unittests/test_broken_functions.py b/tests/unittests/test_broken_functions.py
index 508122c9..16f87d48 100644
--- a/tests/unittests/test_broken_functions.py
+++ b/tests/unittests/test_broken_functions.py
@@ -21,7 +21,7 @@ async def test_load_broken__missing_py_param(self):
             self.assertRegex(
                 r.response.result.exception.message,
                 r".*cannot load the missing_py_param function"
-                r".*parameters are declared in function.json"
+                r".*parameters are declared in trigger annotation"
                 r".*'req'.*")
 
     async def test_load_broken__missing_json_param(self):
@@ -37,7 +37,7 @@ async def test_load_broken__missing_json_param(self):
             self.assertRegex(
                 r.response.result.exception.message,
                 r".*cannot load the missing_json_param function"
-                r".*parameters are declared in Python"
+                r".*parameters are declared in function parameter"
                 r".*'spam'.*")
 
     async def test_load_broken__wrong_param_dir(self):