diff --git a/src/clevo_acpi.c b/src/clevo_acpi.c
index 2a79a23..9ea9624 100644
--- a/src/clevo_acpi.c
+++ b/src/clevo_acpi.c
@@ -79,7 +79,7 @@ static int clevo_acpi_evaluate(struct acpi_device *device, u8 cmd, u32 arg, unio
 	return status;
 }
 
-int clevo_acpi_interface_method_call(u8 cmd, u32 arg, union acpi_object **result_value)
+static int clevo_acpi_interface_method_call(u8 cmd, u32 arg, union acpi_object **result_value)
 {
 	int status = 0;
 
@@ -137,7 +137,7 @@ static void clevo_acpi_remove(struct acpi_device *device)
 #endif
 }
 
-void clevo_acpi_notify(struct acpi_device *device, u32 event)
+static void clevo_acpi_notify(struct acpi_device *device, u32 event)
 {
 	u32 event_value;
 	union acpi_object *out_obj;
diff --git a/src/clevo_wmi.c b/src/clevo_wmi.c
index 8b412be..4fb14ee 100644
--- a/src/clevo_wmi.c
+++ b/src/clevo_wmi.c
@@ -55,7 +55,7 @@ static int clevo_wmi_evaluate(u32 wmi_method_id, u32 wmi_arg, union acpi_object
 	return return_status;
 }
 
-int clevo_wmi_interface_method_call(u8 cmd, u32 arg, union acpi_object **result_value)
+static int clevo_wmi_interface_method_call(u8 cmd, u32 arg, union acpi_object **result_value)
 {
 	return clevo_wmi_evaluate(cmd, arg, result_value);
 }
diff --git a/src/tuxedo_io/tuxedo_io.c b/src/tuxedo_io/tuxedo_io.c
index 38c3337..fca1bcd 100644
--- a/src/tuxedo_io/tuxedo_io.c
+++ b/src/tuxedo_io/tuxedo_io.c
@@ -112,7 +112,7 @@ static int tdp_max_gmxpxxx[] = { 0x82, 0x82, 0xc8 };
 static int *tdp_min_defs = NULL;
 static int *tdp_max_defs = NULL;
 
-void uw_id_tdp(void)
+static void uw_id_tdp(void)
 {
 	if (uw_feats->model == UW_MODEL_PH4TUX) {
 		tdp_min_defs = tdp_min_ph4tux;
diff --git a/src/tuxedo_keyboard_common.h b/src/tuxedo_keyboard_common.h
index aae510b..3253832 100644
--- a/src/tuxedo_keyboard_common.h
+++ b/src/tuxedo_keyboard_common.h
@@ -61,7 +61,7 @@ void tuxedo_keyboard_remove_driver(struct tuxedo_keyboard_driver *tk_driver);
 /**
  * Basically a copy of the existing report event but doesn't report unknown events
  */
-bool sparse_keymap_report_known_event(struct input_dev *dev, unsigned int code,
+inline bool sparse_keymap_report_known_event(struct input_dev *dev, unsigned int code,
 					unsigned int value, bool autorelease)
 {
 	const struct key_entry *ke =
diff --git a/src/uniwill_wmi.c b/src/uniwill_wmi.c
index 009e199..9e903fc 100644
--- a/src/uniwill_wmi.c
+++ b/src/uniwill_wmi.c
@@ -249,7 +249,7 @@ static int uw_ec_write_addr_direct(u8 addr_low, u8 addr_high, u8 data_low, u8 da
 	return result;
 }
 
-int uw_wmi_read_ec_ram(u16 addr, u8 *data)
+static int uw_wmi_read_ec_ram(u16 addr, u8 *data)
 {
 	int result;
 	u8 addr_low, addr_high;
@@ -271,7 +271,7 @@ int uw_wmi_read_ec_ram(u16 addr, u8 *data)
 	return result;
 }
 
-int uw_wmi_write_ec_ram(u16 addr, u8 data)
+static int uw_wmi_write_ec_ram(u16 addr, u8 data)
 {
 	int result;
 	u8 addr_low, addr_high, data_low, data_high;