diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 8f1707dbfcfa..e5cd4a958846 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1042,8 +1042,8 @@ static int bpf_map_find_btf_info(struct bpf_map *map, const struct btf *btf)
 	}
 
 	if (def->key_size != key_size) {
-		pr_warning("map:%s key_type:%s has BTF type_size:%ld != key_size:%u\n",
-			   map->name, name, key_size, def->key_size);
+		pr_warning("map:%s key_type:%s has BTF type_size:%u != key_size:%u\n",
+			   map->name, name, (unsigned int)key_size, def->key_size);
 		return -EINVAL;
 	}
 
@@ -1069,8 +1069,8 @@ static int bpf_map_find_btf_info(struct bpf_map *map, const struct btf *btf)
 	}
 
 	if (def->value_size != value_size) {
-		pr_warning("map:%s value_type:%s has BTF type_size:%ld != value_size:%u\n",
-			   map->name, name, value_size, def->value_size);
+		pr_warning("map:%s value_type:%s has BTF type_size:%u != value_size:%u\n",
+			   map->name, name, (unsigned int)value_size, def->value_size);
 		return -EINVAL;
 	}