diff --git a/sqlmap.py b/sqlmap.py
index 1fd6f47f7..4a0e1ff5a 100755
--- a/sqlmap.py
+++ b/sqlmap.py
@@ -147,6 +147,13 @@ def main():
             logger.error(errMsg)
             raise SystemExit
 
+        elif "bad marshal data (unknown type code)" in excMsg:
+            match = re.search(r"\s*(.+)\s+ValueError", excMsg)
+            errMsg = "one of your .pyc files are corrupted%s" % (" ('%s')" % match.group(1) if match else "")
+            errMsg += ". Please delete .pyc files on your system to fix the problem"
+            logger.error(errMsg)
+            raise SystemExit
+
         for match in re.finditer(r'File "(.+?)", line', excMsg):
             file_ = match.group(1)
             file_ = os.path.relpath(file_, os.path.dirname(__file__))