diff --git a/src/motif/window.cpp b/src/motif/window.cpp
index 58a365a188..6da1631f93 100644
--- a/src/motif/window.cpp
+++ b/src/motif/window.cpp
@@ -1252,8 +1252,8 @@ void wxWindow::DoSetSizeIntr(int x, int y, int width, int height,
 
     if (x == -1)
         x = oldX;
-    if (x == -1)
-        x = oldY;
+    if (y == -1)
+        y = oldY;
 
     if ( !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
     {