1 files changed, 2 insertions, 1 deletions

diff --git a/src/column.h b/src/column.h
index 8c07f62..d1b670d 100644
--- a/src/column.h
+++ b/src/column.h
@@ -48,7 +48,8 @@ namespace Neural
                         {
                                 (*i)->process( pBuffer, pNextBuffer );
                                 pBuffer = pNextBuffer;
-                                iBuf++;
+                                if( iBuf )
+                                        iBuf++;
                                 if( iBuf )
                                         pNextBuffer = *iBuf;
                                 else