diff --git a/spinifex/handlers/rds/parametergroup.go b/spinifex/handlers/rds/parametergroup.go
index e0b41fd83..866c6fe1b 100644
--- a/spinifex/handlers/rds/parametergroup.go
+++ b/spinifex/handlers/rds/parametergroup.go
@@ -118,7 +118,7 @@ func (s *Service) DescribeDBParameterGroups(ctx context.Context, input *rds.Desc
 		if err != nil {
 			// Deleted between the listing and this read; the same answer a describe
 			// one tick later would give.
-			if strings.HasPrefix(err.Error(), awserrors.ErrorDBParameterGroupNotFound) {
+			if awserrors.IsErrorCode(err, awserrors.ErrorDBParameterGroupNotFound) {
 				continue
 			}
 			return nil, err