diff --git a/rdkafka.c b/rdkafka.c
index f073636..ef5656a 100644
--- a/rdkafka.c
+++ b/rdkafka.c
@@ -471,7 +471,7 @@ PHP_METHOD(RdKafka, oauthbearerSetToken)
         case IS_DOUBLE:
             lifetime_ms = (int64_t) Z_DVAL_P(zlifetime_ms);
             break;
-        case IS_STRING:
+        case IS_STRING:;
             char *str = Z_STRVAL_P(zlifetime_ms);
             char *end;
             lifetime_ms = (int64_t) strtoll(str, &end, 10);