diff --git a/libavcodec/hevc.h b/libavcodec/hevc.h
index 73164183d9..fe9c4e90e0 100644
--- a/libavcodec/hevc.h
+++ b/libavcodec/hevc.h
@@ -380,7 +380,7 @@ typedef struct ScalingList {
 } ScalingList;
 
 typedef struct HEVCSPS {
-    int vps_id;
+    unsigned vps_id;
     int chroma_format_idc;
     uint8_t separate_colour_plane_flag;
 
@@ -461,7 +461,7 @@ typedef struct HEVCSPS {
 } HEVCSPS;
 
 typedef struct HEVCPPS {
-    int sps_id; ///< seq_parameter_set_id
+    unsigned sps_id; ///< seq_parameter_set_id
 
     uint8_t sign_data_hiding_flag;