diff --git a/minio/resource_minio_iam_policy.go b/minio/resource_minio_iam_policy.go
index 925f2b40..e5aab95f 100644
--- a/minio/resource_minio_iam_policy.go
+++ b/minio/resource_minio_iam_policy.go
@@ -137,9 +137,9 @@ func validateIAMNamePolicy(v interface{}, k string) (ws []string, errors []error
 			"%q cannot be longer than 96 characters, name is limited to 128", k))
 	}
 
-	if !regexp.MustCompile(`^[\w+=,.@-:]*$`).MatchString(value) {
+	if !regexp.MustCompile(`^[\w+=,.@:-]*$`).MatchString(value) {
 		errors = append(errors, fmt.Errorf(
-			"%q must match [\\w+=,.@-:]", k))
+			"%q must match [\\w+=,.@:-]", k))
 	}
 	return
 }