diff --git a/tests/gem_tiled_fence_blits.c b/tests/gem_tiled_fence_blits.c
index bc2462f7..9f41f7be 100644
--- a/tests/gem_tiled_fence_blits.c
+++ b/tests/gem_tiled_fence_blits.c
@@ -148,7 +148,7 @@ int main(int argc, char **argv)
 
 	fd = drm_open_any();
 	count = 3 * gem_aperture_size(fd) / (1024*1024) / 2;
-	count += (count & 1) == 0;
+	count |= 1;
 	printf("Using %d 1MiB buffers\n", count);
 
 	bufmgr = drm_intel_bufmgr_gem_init(fd, 4096);