diff --git a/sys/kern/kern_syscalls.c b/sys/kern/kern_syscalls.c
--- a/sys/kern/kern_syscalls.c
+++ b/sys/kern/kern_syscalls.c
@@ -173,7 +173,7 @@
     int what, void *arg)
 {
 	struct syscall_module_data *data = arg;
-	modspecific_t ms;
+	modspecific_t ms = { 0 };
 	int error;
 
 	switch (what) {