diff --git a/src/firejail/firejail.h b/src/firejail/firejail.h
index 613fafe72d4..d0b903fb404 100644
--- a/src/firejail/firejail.h
+++ b/src/firejail/firejail.h
@@ -974,7 +974,7 @@ int ll_write(const char *allowed_path);
 int ll_special(const char *allowed_path);
 int ll_exec(const char *allowed_path);
 int ll_basic_system(void);
-int ll_restrict(__u32 flags);
+int ll_restrict(uint32_t flags);
 void ll_add_profile(int type, const char *data);
 #endif /* HAVE_LANDLOCK */
 
diff --git a/src/firejail/landlock.c b/src/firejail/landlock.c
index 054d31ee479..9cf5ec165e4 100644
--- a/src/firejail/landlock.c
+++ b/src/firejail/landlock.c
@@ -244,7 +244,7 @@ int ll_basic_system(void) {
 	return error;
 }
 
-int ll_restrict(__u32 flags) {
+int ll_restrict(uint32_t flags) {
 	if (!ll_is_supported())
 		return 0;