diff --git a/app/pdb/gimpprocedure.c b/app/pdb/gimpprocedure.c
index adb14388e8..83a9cee57b 100644
--- a/app/pdb/gimpprocedure.c
+++ b/app/pdb/gimpprocedure.c
@@ -476,6 +476,7 @@ gimp_procedure_get_return_values (GimpProcedure *procedure,
         {
           switch ((GimpPdbErrorCode) error->code)
             {
+            case GIMP_PDB_FAILED:
             case GIMP_PDB_PROCEDURE_NOT_FOUND:
             case GIMP_PDB_INVALID_ARGUMENT:
             case GIMP_PDB_INVALID_RETURN_VALUE: