diff --git a/src/pool/PoolSQL.cc b/src/pool/PoolSQL.cc
index 92494532d3..a7700b0c33 100644
--- a/src/pool/PoolSQL.cc
+++ b/src/pool/PoolSQL.cc
@@ -258,10 +258,10 @@ void PoolSQL::clean()
         it->second->lock();
 
         delete it->second;
-
-        pool.erase(it);
     }
 
+    pool.clear();
+
     unlock();
 }