diff --git a/fsfwgen/returnvalues/returnvalues_parser.py b/fsfwgen/returnvalues/returnvalues_parser.py
index 4ec2986..57a5af8 100644
--- a/fsfwgen/returnvalues/returnvalues_parser.py
+++ b/fsfwgen/returnvalues/returnvalues_parser.py
@@ -115,11 +115,10 @@ class InterfaceParser(FileParser):
             )
             sys.exit(1)
         if not end_matched:
-            print(
-                "No end match detected when parsing interface files. "
-                "Make sure to use [EXPORT] : [END]"
+            raise ValueError(
+                f"No end match detected when parsing interface file {file_name}. "
+                f"Make sure to use [EXPORT] : [END]"
             )
-            sys.exit(1)
         file_conn_entry.sh = FileStartHelper(
             start_name, first_entry_name_or_index, count, None
         )