diff --git a/Kernel/Process.h b/Kernel/Process.h
index d91817b163..3b84fb56a8 100644
--- a/Kernel/Process.h
+++ b/Kernel/Process.h
@@ -285,7 +285,7 @@ public:
     int sys$symlink(Userspace<const Syscall::SC_symlink_params*>);
     int sys$rmdir(Userspace<const char*> pathname, size_t path_length);
     int sys$mount(Userspace<const Syscall::SC_mount_params*>);
-    int sys$umount(const char* mountpoint, size_t mountpoint_length);
+    int sys$umount(Userspace<const char*> mountpoint, size_t mountpoint_length);
     int sys$chmod(const char* pathname, size_t path_length, mode_t);
     int sys$fchmod(int fd, mode_t);
     int sys$chown(Userspace<const Syscall::SC_chown_params*>);
diff --git a/Kernel/Syscalls/mount.cpp b/Kernel/Syscalls/mount.cpp
index a10de855a5..68f9a3ba89 100644
--- a/Kernel/Syscalls/mount.cpp
+++ b/Kernel/Syscalls/mount.cpp
@@ -122,7 +122,7 @@ int Process::sys$mount(Userspace<const Syscall::SC_mount_params*> user_params)
     return result;
 }
 
-int Process::sys$umount(const char* user_mountpoint, size_t mountpoint_length)
+int Process::sys$umount(Userspace<const char*> user_mountpoint, size_t mountpoint_length)
 {
     if (!is_superuser())
         return -EPERM;