diff --git a/src/platform/guiwin.cpp b/src/platform/guiwin.cpp
index 8a54deed..70160bbc 100644
--- a/src/platform/guiwin.cpp
+++ b/src/platform/guiwin.cpp
@@ -1389,7 +1389,7 @@ WindowRef CreateWindow(Window::Kind kind, WindowRef parentWindow) {
 static HWND hSpaceWareDriverClass;
 
 void Open3DConnexion() {
-    HWND hSpaceWareDriverClass = FindWindowW(L"SpaceWare Driver Class", NULL);
+    hSpaceWareDriverClass = FindWindowW(L"SpaceWare Driver Class", NULL);
     if(hSpaceWareDriverClass != NULL) {
         SiInitialize();
     }