diff --git a/src/vst2/Vst2PluginInstance.cpp b/src/vst2/Vst2PluginInstance.cpp
index df71fcb8831..510e0afe685 100644
--- a/src/vst2/Vst2PluginInstance.cpp
+++ b/src/vst2/Vst2PluginInstance.cpp
@@ -58,6 +58,8 @@ BOOL WINAPI DllMain(HINSTANCE hInst, DWORD dwReason, LPVOID lpvReserved)
    return 1;
 }
 } // extern "C"
+#elif __linux__
+namespace VSTGUI { void* soHandle = nullptr; }
 #endif
 
 //-------------------------------------------------------------------------------------------------------