diff --git a/tests/ztimer_periodic/main.c b/tests/ztimer_periodic/main.c
index bf95008f2e..41074f5f50 100644
--- a/tests/ztimer_periodic/main.c
+++ b/tests/ztimer_periodic/main.c
@@ -32,9 +32,9 @@
 
 static mutex_t _mutex = MUTEX_INIT_LOCKED;
 
-#define N 5
+#define REPEAT 5
 
-static uint32_t _times[N];
+static uint32_t _times[REPEAT];
 static int _count;
 #define ZTIMER_CLOCKS { ZTIMER_MSEC, ZTIMER_USEC }
 static const char *_names[] = { "ZTIMER_MSEC", "ZTIMER_USEC" };
@@ -54,11 +54,11 @@ static int callback(void *arg)
     }
 #endif
 
-    if (_count == N) {
+    if (_count == REPEAT) {
         mutex_unlock(&_mutex);
     }
 
-    return (_count == N);
+    return (_count == REPEAT);
 }
 
 int main(void)
@@ -85,10 +85,10 @@ int main(void)
             return 1;
         }
 
-        /* wait for periodic to trigger N times */
+        /* wait for periodic to trigger REPEAT times */
         mutex_lock(&_mutex);
 
-        for (unsigned i = 0; i < N; i++) {
+        for (unsigned i = 0; i < REPEAT; i++) {
             uint32_t offset = labs((int32_t)(_times[i] - _intervals[j] - last));
             printf("i: %u time: %" PRIu32 " offset: %" PRIu32 "\n",
                    i, _times[i], offset);