diff --git a/tests/xtimer_now64_continuity/main.c b/tests/xtimer_now64_continuity/main.c
index c6bf74145481e61f0afb2ac081611bfd0d91529d..34e08f8b6f474f3a32995f23d18dcb89fad7d893 100644
--- a/tests/xtimer_now64_continuity/main.c
+++ b/tests/xtimer_now64_continuity/main.c
@@ -29,11 +29,10 @@
 int main(void)
 {
     uint32_t n = ITERATIONS;
-    uint64_t now;
     uint64_t before = xtimer_now64();
 
     while(--n) {
-        now = xtimer_now64();
+        uint64_t now = xtimer_now64();
         if ((now-before) > MAXDIFF) {
             puts("TEST FAILED.");
             break;