diff --git a/plugins/zzogl-pg/opengl/GLWin32.cpp b/plugins/zzogl-pg/opengl/GLWin32.cpp
index ee68fce0d5..3c959019cb 100644
--- a/plugins/zzogl-pg/opengl/GLWin32.cpp
+++ b/plugins/zzogl-pg/opengl/GLWin32.cpp
@@ -47,7 +47,7 @@ LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
 		case WM_SIZE:
 			nWindowWidth = lParam & 0xffff;
 			nWindowHeight = lParam >> 16;
-			UpdateWindowSize(nWindowWidth, nWindowHeight);
+			GLWin.UpdateWindowSize(nWindowWidth, nWindowHeight);
 			break;
 
 		case WM_SIZING: