diff --git a/src/ahriman/core/triggers/trigger_loader.py b/src/ahriman/core/triggers/trigger_loader.py
index 65a6cfa9..4490bc8e 100644
--- a/src/ahriman/core/triggers/trigger_loader.py
+++ b/src/ahriman/core/triggers/trigger_loader.py
@@ -104,6 +104,9 @@ class TriggerLoader:
 
         Returns:
             ModuleType: module loaded from the imported module
+
+        Raises:
+            InvalidExtension: in case if module cannot be loaded from specified package
         """
         self.logger.info("load module from package %s", package)
         try:
@@ -119,13 +122,17 @@ class TriggerLoader:
             module_path(str): module import path to load
 
         Returns:
-             Trigger: loaded trigger based on settings
+            Trigger: loaded trigger based on settings
+
+        Raises:
+            InvalidExtension: in case if module cannot be loaded from the specified module path or is not a trigger
         """
         *package_path_parts, class_name = module_path.split(".")
         package_or_path = ".".join(package_path_parts)
 
         # it works for both missing permission and file does not exist
-        if os.access(Path(package_or_path), os.R_OK):
+        path_like = Path(package_or_path)
+        if os.access(path_like, os.R_OK) and path_like.is_file():
             module = self._load_module_from_file(package_or_path, class_name)
         else:
             module = self._load_module_from_package(package_or_path)
diff --git a/tests/ahriman/core/triggers/test_trigger_loader.py b/tests/ahriman/core/triggers/test_trigger_loader.py
index 1f97dfff..d625a380 100644
--- a/tests/ahriman/core/triggers/test_trigger_loader.py
+++ b/tests/ahriman/core/triggers/test_trigger_loader.py
@@ -58,6 +58,15 @@ def test_load_trigger_path(trigger_loader: TriggerLoader, resource_path_root: Pa
     assert trigger_loader._load_trigger(f"{path}.ReportTrigger")
 
 
+def test_load_trigger_path_directory(trigger_loader: TriggerLoader, resource_path_root: Path) -> None:
+    """
+    must raise InvalidExtension if provided import path is directory
+    """
+    path = resource_path_root.parent.parent / "src" / "ahriman" / "core" / "report"
+    with pytest.raises(InvalidExtension):
+        trigger_loader._load_trigger(f"{path}.ReportTrigger")
+
+
 def test_load_trigger_path_not_found(trigger_loader: TriggerLoader) -> None:
     """
     must raise InvalidExtension if file cannot be found