diff --git a/test/api/hb-test.h b/test/api/hb-test.h
index 8e3cc1e88..840637aac 100644
--- a/test/api/hb-test.h
+++ b/test/api/hb-test.h
@@ -53,12 +53,16 @@ HB_BEGIN_DECLS
 				  ((const char *) s)[3]))
 
 #define HB_FACE_ADD_TABLE(face, tag, data) \
-	hb_face_builder_add_table ((face), \
-				   HB_TAG_CHAR4(tag), \
-				   hb_blob_create_or_fail ((data), \
-							    sizeof (data), \
-							    HB_MEMORY_MODE_READONLY, \
-							    NULL, NULL))
+	do { \
+	  hb_blob_t *blob = hb_blob_create_or_fail ((data), \
+						    sizeof (data), \
+						    HB_MEMORY_MODE_READONLY, \
+						    NULL, NULL); \
+	  hb_face_builder_add_table ((face), \
+				     HB_TAG_CHAR4(tag), \
+				     blob); \
+	  hb_blob_destroy (blob); \
+	} while (0)
 
 static inline const char *
 srcdir (void)