1 files changed, 0 insertions, 1 deletions
diff --git a/hal/Hal.h b/hal/Hal.h
index 224b4c451e..14247ee2e8 100644
--- a/hal/Hal.h
+++ b/hal/Hal.h
@@ -18,7 +18,6 @@
 #include "mozilla/hal_sandbox/PHal.h"
 #include "mozilla/HalScreenConfiguration.h"
 #include "mozilla/HalTypes.h"
-#include "mozilla/Observer.h"
 #include "mozilla/Types.h"
 
 /*