diff --git a/pkg/remux/gop_cache.go b/pkg/remux/gop_cache.go
index 1848ff2..ff13b2f 100644
--- a/pkg/remux/gop_cache.go
+++ b/pkg/remux/gop_cache.go
@@ -155,8 +155,9 @@ func (gc *GopCache) Clear() {
 // 注意，如果GopCache为空，则不缓存msg
 func (gc *GopCache) feedLastGop(msg base.RtmpMsg, b []byte) {
 	if !gc.isGopRingEmpty() {
-		if gc.gopRing[(gc.gopRingLast-1+gc.gopSize)%gc.gopSize].len()<=gc.singleGopMaxNum ||gc.singleGopMaxNum==0{
-			gc.gopRing[(gc.gopRingLast-1+gc.gopSize)%gc.gopSize].Feed(msg, b)
+		gopPos:=(gc.gopRingLast-1+gc.gopSize)%gc.gopSize
+		if gc.gopRing[gopPos].len()<=gc.singleGopMaxNum ||gc.singleGopMaxNum==0{
+			gc.gopRing[gopPos].Feed(msg, b)
 		}
 	}
 }
diff --git a/pkg/remux/gop_cache_mpegts.go b/pkg/remux/gop_cache_mpegts.go
index 380bed3..2f7101f 100644
--- a/pkg/remux/gop_cache_mpegts.go
+++ b/pkg/remux/gop_cache_mpegts.go
@@ -74,8 +74,9 @@ func (gc *GopCacheMpegts) Clear() {
 // 注意，如果GopCache为空，则不缓存msg
 func (gc *GopCacheMpegts) feedLastGop(b []byte) {
 	if !gc.isGopRingEmpty() {
-		if gc.gopRing[(gc.gopRingLast-1+gc.gopSize)%gc.gopSize].len()<=gc.singleGopMaxNum ||gc.singleGopMaxNum==0{
-			gc.gopRing[(gc.gopRingLast-1+gc.gopSize)%gc.gopSize].Feed(b)
+		gopPos:=(gc.gopRingLast-1+gc.gopSize)%gc.gopSize
+		if gc.gopRing[gopPos].len()<=gc.singleGopMaxNum ||gc.singleGopMaxNum==0{
+			gc.gopRing[gopPos].Feed(b)
 		}
 
 	}