diff --git a/libavutil/tree.c b/libavutil/tree.c
index e41218fecc98d34b6c197b0bdd905156e2d53794..b6d043963cfaf13e657467c31369c258dbca11f4 100644
--- a/libavutil/tree.c
+++ b/libavutil/tree.c
@@ -155,7 +155,7 @@ int cmp(const void *a, const void *b){
 }
 
 int main(void){
-    int i,j,k;
+    int i,k;
     AVTreeNode *root= NULL, *node=NULL;
 
     for(i=0; i<10000; i++){