diff --git a/plugins/out_stackdriver/stackdriver.c b/plugins/out_stackdriver/stackdriver.c
index b394b1eb101..23d31ad4f0a 100644
--- a/plugins/out_stackdriver/stackdriver.c
+++ b/plugins/out_stackdriver/stackdriver.c
@@ -2500,13 +2500,12 @@ static void add_record_metrics(struct flb_stackdriver* ctx,
 {
   char grpc_code_label[32];
   char response_code_label[32];
-  char* name;
+  char* name = (char*) flb_output_name(ctx->ins);
   /* convert status to string format */
   snprintf(response_code_label, sizeof(response_code_label) - 1, "%i",
            response_code);
   /* convert grpc_code to string format */
   snprintf(grpc_code_label, sizeof(grpc_code_label) - 1, "%i", grpc_code);
-  name = (char*) flb_output_name(ctx->ins);
 
   /* processed records total */
   cmt_counter_add(ctx->cmt_proc_records_total, ts, val, 3,
diff --git a/plugins/out_stackdriver/stackdriver.h b/plugins/out_stackdriver/stackdriver.h
index d7a5394e59f..41ec385b507 100644
--- a/plugins/out_stackdriver/stackdriver.h
+++ b/plugins/out_stackdriver/stackdriver.h
@@ -86,7 +86,8 @@
 #define FLB_STACKDRIVER_FAILED_REQUESTS      1001   /* failed requests */
 #endif
 
-#define GRPC_STATUS_CODES_SIZE 32
+// https://grpc.github.io/grpc/core/md_doc_statuscodes.html
+#define GRPC_STATUS_CODES_SIZE 17
 #define PARTIAL_SUCCESS_GRPC_TYPE "type.googleapis.com/google.logging.v2.WriteLogEntriesPartialErrors"
 #define PARTIAL_SUCCESS_GRPC_TYPE_SIZE 66