diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index be30c7eeca4..e8d8415f543 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -725,7 +725,7 @@ static boolean r600_fence_signalled(struct pipe_screen *pscreen,
 	struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 	struct r600_fence *rfence = (struct r600_fence*)fence;
 
-	return rscreen->fences.data[rfence->index];
+	return rscreen->fences.data[rfence->index] != 0;
 }
 
 static boolean r600_fence_finish(struct pipe_screen *pscreen,