diff --git a/lib/core/agent.py b/lib/core/agent.py
index 6d61ca5c2..e94c3f73e 100644
--- a/lib/core/agent.py
+++ b/lib/core/agent.py
@@ -148,7 +148,7 @@ class Agent:
             raise sqlmapNoneDataException, "unsupported injection type"
 
         if conf.prefix:
-            query = conf.prefix
+            query = "%s " % conf.prefix.strip()
         else:
             query = case.usage.prefix.format % eval(case.usage.prefix.params)