1 files changed, 1 insertions, 1 deletions
diff --git a/backends/modular-backend.h b/backends/modular-backend.h
index 8f4c5e01ec..f055ad2e96 100644
--- a/backends/modular-backend.h
+++ b/backends/modular-backend.h
@@ -32,7 +32,7 @@
 #include "backends/mutex/null/null-mutex.h"
 #include "backends/graphics/null/null-graphics.h"
 
-class ModularBackend : public OSystem {
+class ModularBackend : public OSystem, public Common::EventSource {
 public:
 	ModularBackend();
 	virtual ~ModularBackend();