diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c
index 8ed83de8fd..0b796ce28b 100644
--- a/libavcodec/apedec.c
+++ b/libavcodec/apedec.c
@@ -929,7 +929,7 @@ static void long_filter_ehigh_3830(int32_t *buffer, int length)
         for (j = 7; j > 0; j--)
             delay[j] = delay[j - 1];
         delay[0] = buffer[i];
-        buffer[i] -= dotprod >> 9;
+        buffer[i] -= (unsigned)(dotprod >> 9);
     }
 }