diff --git a/libavcodec/vc2enc.c b/libavcodec/vc2enc.c
index 6fbac29032..349174c8c7 100644
--- a/libavcodec/vc2enc.c
+++ b/libavcodec/vc2enc.c
@@ -185,7 +185,9 @@ typedef struct VC2EncContext {
 static av_always_inline void put_vc2_ue_uint(PutBitContext *pb, uint32_t val)
 {
     int i;
-    int pbits = 0, bits = 0, topbit = 1, maxval = 1;
+    int bits = 0;
+    unsigned topbit = 1, maxval = 1;
+    uint64_t pbits = 0;
 
     if (!val++) {
         put_bits(pb, 1, 1);
@@ -202,12 +204,13 @@ static av_always_inline void put_vc2_ue_uint(PutBitContext *pb, uint32_t val)
 
     for (i = 0; i < bits; i++) {
         topbit >>= 1;
+        av_assert2(pbits <= UINT64_MAX>>3);
         pbits <<= 2;
         if (val & topbit)
             pbits |= 0x1;
     }
 
-    put_bits(pb, bits*2 + 1, (pbits << 1) | 1);
+    put_bits64(pb, bits*2 + 1, (pbits << 1) | 1);
 }
 
 static av_always_inline int count_vc2_ue_uint(uint32_t val)