diff --git a/drivers/platform/x86/intel_scu_ipcutil.c b/drivers/platform/x86/intel_scu_ipcutil.c
index b7c10c15a3d6..7d87cbd4b9c6 100644
--- a/drivers/platform/x86/intel_scu_ipcutil.c
+++ b/drivers/platform/x86/intel_scu_ipcutil.c
@@ -22,7 +22,7 @@
 
 static int major;
 
-struct intel_scu_ipc_dev *scu;
+static struct intel_scu_ipc_dev *scu;
 static DEFINE_MUTEX(scu_lock);
 
 /* IOCTL commands */