diff --git a/test/core/security/oauth2_utils.h b/test/core/security/oauth2_utils.h
index a2eb068..8082351 100644
--- a/test/core/security/oauth2_utils.h
+++ b/test/core/security/oauth2_utils.h
@@ -37,16 +37,15 @@
 #include "src/core/security/credentials.h"
 
 #ifdef __cplusplus
-extern "C"
-{
+extern "C" {
 #endif
 
 /* Fetch oauth2 access token with a credentials object. Does not take ownership.
    Returns NULL on a failure. The caller should call gpr_free on the token. */
-  char *grpc_test_fetch_oauth2_token_with_credentials (grpc_credentials * creds);
+char *grpc_test_fetch_oauth2_token_with_credentials(grpc_credentials *creds);
 
 #ifdef __cplusplus
 }
 #endif
 
-#endif				/* GRPC_TEST_CORE_SECURITY_OAUTH2_UTILS_H */
+#endif /* GRPC_TEST_CORE_SECURITY_OAUTH2_UTILS_H */