diff --git a/ansiblelater/standard.py b/ansiblelater/standard.py
index 5fd3c6b..4a66bc7 100644
--- a/ansiblelater/standard.py
+++ b/ansiblelater/standard.py
@@ -321,7 +321,7 @@ class StandardLoader():
                 try:
                     spec.loader.exec_module(module)
                 except (ImportError, NameError) as e:
-                    sysexit_with_message(f"Failed to load roles file {filename}: \n {str(e)}")
+                    sysexit_with_message(f"Failed to load roles file {filename}: \n {e!s}")
 
                 try:
                     for _name, obj in inspect.getmembers(module):
diff --git a/ansiblelater/utils/yamlhelper.py b/ansiblelater/utils/yamlhelper.py
index 57fcb42..05207a9 100644
--- a/ansiblelater/utils/yamlhelper.py
+++ b/ansiblelater/utils/yamlhelper.py
@@ -490,7 +490,7 @@ def extract_from_list(blocks, candidates):
                     results.extend(add_action_type(block[candidate], candidate, meta_data))
                 elif block[candidate] is not None:
                     raise RuntimeError(
-                        f"Key '{candidate}' defined, but bad value: '{str(block[candidate])}'"
+                        f"Key '{candidate}' defined, but bad value: '{block[candidate]!s}'"
                     )
     return results