diff --git a/tests/suites/test_suite_gcm.function b/tests/suites/test_suite_gcm.function
index dac2a5d..0af4209 100644
--- a/tests/suites/test_suite_gcm.function
+++ b/tests/suites/test_suite_gcm.function
@@ -165,6 +165,7 @@
     TEST_EQUAL(starts_ret, mbedtls_gcm_starts(ctx, mode, iv, iv_len));
 exit:
     /* empty */
+    return;
 }
 
 /* END_HEADER */
@@ -514,6 +515,7 @@
     goto exit; /* To suppress error that exit is defined but not used */
 exit:
     /* empty */
+    return;
 }
 /* END_CASE */