diff --git a/regex/re_test.go b/regex/re_test.go
index 48be8a3..ce2ed69 100644
--- a/regex/re_test.go
+++ b/regex/re_test.go
@@ -779,7 +779,7 @@ func TestFindAllSubmatch(t *testing.T) {
 			matchIndices := regComp.FindAllSubmatch(test.str)
 			for i := range matchIndices {
 				for j := range matchIndices[i] {
-					if matchIndices[i][j].isValid() {
+					if matchIndices[i][j].IsValid() {
 						if test.result[i][j] != matchIndices[i][j] {
 							t.Errorf("Wanted %v	Got %v\n", test.result, matchIndices)
 						}