diff --git a/extra/graphics/bitmap/bitmap-tests.factor b/extra/graphics/bitmap/bitmap-tests.factor
index 4998427b22..15e960084a 100644
--- a/extra/graphics/bitmap/bitmap-tests.factor
+++ b/extra/graphics/bitmap/bitmap-tests.factor
@@ -1,4 +1,4 @@
-USING: graphics.bitmap ;
+USING: graphics.bitmap graphics.viewer ;
 IN: graphics.bitmap.tests
 
 : test-bitmap24 ( -- )