diff --git a/libavcodec/snow.h b/libavcodec/snow.h
index fd58f72cdf..0778f2af4d 100644
--- a/libavcodec/snow.h
+++ b/libavcodec/snow.h
@@ -561,7 +561,8 @@ static inline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed){
     if(get_rac(c, state+0))
         return 0;
     else{
-        int i, e, a;
+        int i, e;
+        unsigned a;
         e= 0;
         while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10
             e++;