diff --git a/Userland/Libraries/LibC/sys/types.h b/Userland/Libraries/LibC/sys/types.h
index 180179c33f..f1d39d02b4 100644
--- a/Userland/Libraries/LibC/sys/types.h
+++ b/Userland/Libraries/LibC/sys/types.h
@@ -89,8 +89,8 @@ typedef struct __pthread_condattr_t {
     int clockid; // clockid_t
 } pthread_condattr_t;
 
-inline dev_t makedev(unsigned int major, unsigned int minor) { return (minor & 0xffu) | (major << 8u) | ((minor & ~0xffu) << 12u); }
-inline unsigned int major(dev_t dev) { return (dev & 0xfff00u) >> 8u; }
-inline unsigned int minor(dev_t dev) { return (dev & 0xffu) | ((dev >> 12u) & 0xfff00u); }
+static inline dev_t makedev(unsigned int major, unsigned int minor) { return (minor & 0xffu) | (major << 8u) | ((minor & ~0xffu) << 12u); }
+static inline unsigned int major(dev_t dev) { return (dev & 0xfff00u) >> 8u; }
+static inline unsigned int minor(dev_t dev) { return (dev & 0xffu) | ((dev >> 12u) & 0xfff00u); }
 
 __END_DECLS