diff --git a/lib/run_tests.py b/lib/run_tests.py
index 7457cd7..887ab48 100644
--- a/lib/run_tests.py
+++ b/lib/run_tests.py
@@ -282,7 +282,7 @@ class TestRunner:
                 print(f"Test file {self.target_file}.dxf not found in testdata directory")
             else:
                 print("No test files found in testdata directory")
-            return
+            return False
 
         if self.target_file:
             print(f"Running test for file: {self.target_file}")
@@ -298,7 +298,7 @@ class TestRunner:
                 self.failed_tests.append(test_file)
 
         print("=" * 70)
-        self.print_summary()
+        return self.print_summary()
 
     def print_summary(self):
         """Print test summary similar to unittest"""