diff --git a/PowerEditor/src/WinControls/OpenSaveFileDialog/FileDialog.cpp b/PowerEditor/src/WinControls/OpenSaveFileDialog/FileDialog.cpp
index efd860846..2d902ac73 100644
--- a/PowerEditor/src/WinControls/OpenSaveFileDialog/FileDialog.cpp
+++ b/PowerEditor/src/WinControls/OpenSaveFileDialog/FileDialog.cpp
@@ -374,7 +374,7 @@ UINT_PTR CALLBACK FileDialog::OFNHookProc(HWND hWnd, UINT uMsg, WPARAM wParam, L
 
 			// Don't touch the following 3 lines, they are cursed !!!
 			oldProc = (WNDPROC)::GetWindowLongPtr(hFileDlg, GWLP_WNDPROC);
-			if ((LONG_PTR)oldProc > 0)
+			if (oldProc)
 				::SetWindowLongPtr(hFileDlg, GWLP_WNDPROC, (LONG_PTR)fileDlgProc);
 
 			return FALSE;