diff --git a/test/cairo-test-trace.c b/test/cairo-test-trace.c
index 4eee5d30b..7ada3e75a 100644
--- a/test/cairo-test-trace.c
+++ b/test/cairo-test-trace.c
@@ -858,6 +858,8 @@ matches_reference (struct slave *slave)
 
 	case CAIRO_FORMAT_RGB30:
 	case CAIRO_FORMAT_RGB16_565:
+        case CAIRO_FORMAT_RGB96F:
+        case CAIRO_FORMAT_RGBA128F:
 	case CAIRO_FORMAT_INVALID:
 	    assert (0);
 	}