diff --git a/test/gmdifftest.c b/test/gmdifftest.c
index b0fc5c637f..b1720ccf48 100644
--- a/test/gmdifftest.c
+++ b/test/gmdifftest.c
@@ -32,8 +32,8 @@ static int check_time(long offset)
     OPENSSL_gmtime(&t2, &tm2);
     OPENSSL_gmtime(&t1, &tm1);
     o1 = tm1;
-    OPENSSL_gmtime_adj(&tm1, 0, offset);
-    if (!TEST_int_eq(tm1.tm_year, tm2.tm_year)
+    if (!TEST_true(OPENSSL_gmtime_adj(&tm1, 0, offset))
+        || !TEST_int_eq(tm1.tm_year, tm2.tm_year)
         || !TEST_int_eq(tm1.tm_mon, tm2.tm_mon)
         || !TEST_int_eq(tm1.tm_mday, tm2.tm_mday)
         || !TEST_int_eq(tm1.tm_hour, tm2.tm_hour)