diff --git a/src/main.cpp b/src/main.cpp
index 9537a4869..632e6f723 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -4027,7 +4027,7 @@ bool AcceptBlock(CBlock& block, CValidationState& state, CBlockIndex** ppindex,
     }
     if ( pindex == 0 )
     {
-        //fprintf(stderr,"AcceptBlock error null pindex\n");
+        fprintf(stderr,"AcceptBlock error null pindex\n");
         return false;
     }
     //fprintf(stderr,"acceptblockheader passed\n");