diff --git a/app/core/gimpimage.c b/app/core/gimpimage.c
index 65dc4ed387..8f23b7d761 100644
--- a/app/core/gimpimage.c
+++ b/app/core/gimpimage.c
@@ -1498,7 +1498,7 @@ gimp_image_new (Gimp              *gimp,
 {
   g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
   g_return_val_if_fail (base_type != GIMP_INDEXED ||
-                        precision != GIMP_PRECISION_U8, NULL);
+                        precision == GIMP_PRECISION_U8, NULL);
 
   return g_object_new (GIMP_TYPE_IMAGE,
                        "gimp",      gimp,