diff --git a/src/gtk/renderer.cpp b/src/gtk/renderer.cpp
index c6d47c1f4a..952cfeb3e4 100644
--- a/src/gtk/renderer.cpp
+++ b/src/gtk/renderer.cpp
@@ -353,7 +353,7 @@ wxRendererGTK::DrawSplitterSash(wxWindow *win,
         rect.y,
         rect.width,
         rect.height,
-        isVert ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL
+        !isVert ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL
     );
 #else // GTK+ 1.x
 
diff --git a/src/gtk/scrolwin.cpp b/src/gtk/scrolwin.cpp
index fd31b4e024..2125b4d388 100644
--- a/src/gtk/scrolwin.cpp
+++ b/src/gtk/scrolwin.cpp
@@ -325,10 +325,8 @@ void wxScrolledWindow::DoSetVirtualSize( int x, int y )
     wxPanel::DoSetVirtualSize( x, y );
     AdjustScrollbars();
 
-#if wxUSE_CONSTRAINTS
     if (GetAutoLayout())
         Layout();
-#endif
 }
 
 /*
diff --git a/src/gtk1/renderer.cpp b/src/gtk1/renderer.cpp
index c6d47c1f4a..952cfeb3e4 100644
--- a/src/gtk1/renderer.cpp
+++ b/src/gtk1/renderer.cpp
@@ -353,7 +353,7 @@ wxRendererGTK::DrawSplitterSash(wxWindow *win,
         rect.y,
         rect.width,
         rect.height,
-        isVert ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL
+        !isVert ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL
     );
 #else // GTK+ 1.x
 
diff --git a/src/gtk1/scrolwin.cpp b/src/gtk1/scrolwin.cpp
index fd31b4e024..2125b4d388 100644
--- a/src/gtk1/scrolwin.cpp
+++ b/src/gtk1/scrolwin.cpp
@@ -325,10 +325,8 @@ void wxScrolledWindow::DoSetVirtualSize( int x, int y )
     wxPanel::DoSetVirtualSize( x, y );
     AdjustScrollbars();
 
-#if wxUSE_CONSTRAINTS
     if (GetAutoLayout())
         Layout();
-#endif
 }
 
 /*