diff --git a/lib/core/option.py b/lib/core/option.py
index a1f29a842..6ecb9c15f 100644
--- a/lib/core/option.py
+++ b/lib/core/option.py
@@ -1758,6 +1758,10 @@ def __basicOptionValidation():
         errMsg = "switch --forms is compatible only with -u (--url) target switch"
         raise sqlmapSyntaxException, errMsg
 
+    if conf.forms and conf.crawl:
+        errMsg = "switch --forms is currently not compatible with --crawl switch"
+        raise sqlmapSyntaxException, errMsg
+
     if conf.timeSec < 1:
         errMsg = "value for --time-sec option must be an integer greater than 0"
         raise sqlmapSyntaxException, errMsg