diff --git a/libavcodec/dsicinav.c b/libavcodec/dsicinav.c
index 3dd3faf62f..2b7b9eb72d 100644
--- a/libavcodec/dsicinav.c
+++ b/libavcodec/dsicinav.c
@@ -175,6 +175,7 @@ static int cin_decode_lzss(const unsigned char *src, int src_size, unsigned char
             }
         }
     }
+    return 0;
 }
 
 static void cin_decode_rle(const unsigned char *src, int src_size, unsigned char *dst, int dst_size)