diff --git a/src/common/wincmn.cpp b/src/common/wincmn.cpp
index e8999d0f1a..12e2f11fef 100644
--- a/src/common/wincmn.cpp
+++ b/src/common/wincmn.cpp
@@ -624,7 +624,7 @@ bool wxWindowBase::Validate()
     {
         wxWindowBase *child = node->GetData();
         wxValidator *validator = child->GetValidator();
-        if ( validator && validator->Validate((wxWindow *)this) )
+        if ( validator && !validator->Validate((wxWindow *)this) )
         {
             return FALSE;
         }