diff --git a/src/util/frame/mod.rs b/src/util/frame/mod.rs
index 81feb8d..977872f 100644
--- a/src/util/frame/mod.rs
+++ b/src/util/frame/mod.rs
@@ -14,7 +14,7 @@ use ::picture;
 use ::color;
 
 bitflags! {
-	flags Flags: i32 {
+	flags Flags: c_int {
 		const FLAG_CORRUPT = AV_FRAME_FLAG_CORRUPT,
 	}
 }