diff --git a/pymlac/test_TTYIN.py b/pymlac/test_TTYIN.py
index f447db7..b6313c4 100644
--- a/pymlac/test_TTYIN.py
+++ b/pymlac/test_TTYIN.py
@@ -108,8 +108,7 @@ def main():
     # print number of errors
     print('\n***** %d errors' % ErrorCount)
 
-#    return ErrorCount
-    return 0
+    return ErrorCount
 
 
 ################################################################################
diff --git a/pymlac/test_TTYOUT.py b/pymlac/test_TTYOUT.py
index 5e8fc77..bcd3c37 100644
--- a/pymlac/test_TTYOUT.py
+++ b/pymlac/test_TTYOUT.py
@@ -105,8 +105,7 @@ def main():
     # print number of errors
     print('\n***** %d errors' % ErrorCount)
 
-#    return ErrorCount
-    return 0
+    return ErrorCount
 
 
 ################################################################################