diff --git a/src/btf_relocate.c b/src/btf_relocate.c
index 2281dbb..17f8b32 100644
--- a/src/btf_relocate.c
+++ b/src/btf_relocate.c
@@ -58,8 +58,8 @@ struct btf_relocate {
 struct btf_name_info {
 	const char *name;
 	/* set when search requires a size match */
-	int needs_size:1,
-	    size:31;
+	bool needs_size: 1;
+	unsigned int size: 31;
 	__u32 id;
 };