diff --git a/drivers/platform/x86/dell-smbios-wmi.c b/drivers/platform/x86/dell-smbios-wmi.c
index fbefedb1c17237c5a926446bb9162ef2a8fcb993..88afe5651d24aec8e1d30b748cd67f295d1558d5 100644
--- a/drivers/platform/x86/dell-smbios-wmi.c
+++ b/drivers/platform/x86/dell-smbios-wmi.c
@@ -82,7 +82,7 @@ static int run_smbios_call(struct wmi_device *wdev)
 	return 0;
 }
 
-int dell_smbios_wmi_call(struct calling_interface_buffer *buffer)
+static int dell_smbios_wmi_call(struct calling_interface_buffer *buffer)
 {
 	struct wmi_smbios_priv *priv;
 	size_t difference;