diff --git a/libavcodec/acelp_vectors.c b/libavcodec/acelp_vectors.c
index 0d4de0e4c3..8adea683c1 100644
--- a/libavcodec/acelp_vectors.c
+++ b/libavcodec/acelp_vectors.c
@@ -229,13 +229,14 @@ void ff_set_fixed_vector(float *out, const AMRFixed *in, float scale, int size)
         int x   = in->x[i], repeats = !((in->no_repeat_mask >> i) & 1);
         float y = in->y[i] * scale;
 
-        if (in->pitch_lag > 0)
+        if (in->pitch_lag > 0) {
             av_assert0(x < size);
             do {
                 out[x] += y;
                 y *= in->pitch_fac;
                 x += in->pitch_lag;
             } while (x < size && repeats);
+        }
     }
 }