diff --git a/webrtc/modules/audio_coding/neteq/audio_vector.h b/webrtc/modules/audio_coding/neteq/audio_vector.h
index 18ab95c46d..9100ff8968 100644
--- a/webrtc/modules/audio_coding/neteq/audio_vector.h
+++ b/webrtc/modules/audio_coding/neteq/audio_vector.h
@@ -128,9 +128,8 @@ class AudioVector {
                                  size_t begin_index,
                                  size_t capacity) {
     RTC_DCHECK_GE(begin_index + index, index);  // Check for overflow.
-    const size_t ix = begin_index + index >= capacity
-                          ? begin_index + index - capacity
-                          : begin_index + index;
+    const size_t ix =
+        begin_index + index - (begin_index + index >= capacity ? capacity : 0);
     RTC_DCHECK_LT(ix, capacity);
     return ix;
   }