diff --git a/drivers/gpio/gpio_pca95xx.c b/drivers/gpio/gpio_pca95xx.c
index 1ab895f1ae6..3202b0a9e28 100644
--- a/drivers/gpio/gpio_pca95xx.c
+++ b/drivers/gpio/gpio_pca95xx.c
@@ -17,8 +17,6 @@
 #include <drivers/gpio.h>
 #include <drivers/i2c.h>
 
-#include "gpio_pca95xx.h"
-
 #define LOG_LEVEL CONFIG_GPIO_LOG_LEVEL
 #include <logging/log.h>
 LOG_MODULE_REGISTER(gpio_pca95xx);
@@ -51,6 +49,40 @@ LOG_MODULE_REGISTER(gpio_pca95xx);
 /* Driver flags */
 #define PCA_HAS_PUD			BIT(0)
 
+/** Configuration data */
+struct gpio_pca95xx_config {
+	/** The master I2C device's name */
+	const char * const i2c_master_dev_name;
+
+	/** The slave address of the chip */
+	u16_t i2c_slave_addr;
+
+	u8_t capabilities;
+};
+
+/** Store the port 0/1 data for each register pair. */
+union gpio_pca95xx_port_data {
+	u16_t all;
+	u8_t port[2];
+	u8_t byte[2];
+};
+
+/** Runtime driver data */
+struct gpio_pca95xx_drv_data {
+	/* gpio_driver_data needs to be first */
+	struct gpio_driver_data common;
+
+	/** Master I2C device */
+	struct device *i2c_master;
+
+	struct {
+		union gpio_pca95xx_port_data output;
+		union gpio_pca95xx_port_data dir;
+		union gpio_pca95xx_port_data pud_en;
+		union gpio_pca95xx_port_data pud_sel;
+	} reg_cache;
+};
+
 /**
  * @brief Read both port 0 and port 1 registers of certain register function.
  *
diff --git a/drivers/gpio/gpio_pca95xx.h b/drivers/gpio/gpio_pca95xx.h
deleted file mode 100644
index f6d2ae6aad7..00000000000
--- a/drivers/gpio/gpio_pca95xx.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2015 Intel Corporation.
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-/**
- * @file Header file for the PCA95XX driver.
- */
-
-#ifndef ZEPHYR_DRIVERS_GPIO_GPIO_PCA95XX_H_
-#define ZEPHYR_DRIVERS_GPIO_GPIO_PCA95XX_H_
-
-#include <kernel.h>
-
-#include <drivers/gpio.h>
-#include <drivers/i2c.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/** Configuration data */
-struct gpio_pca95xx_config {
-	/** The master I2C device's name */
-	const char * const i2c_master_dev_name;
-
-	/** The slave address of the chip */
-	u16_t i2c_slave_addr;
-
-	u8_t capabilities;
-};
-
-/** Store the port 0/1 data for each register pair. */
-union gpio_pca95xx_port_data {
-	u16_t all;
-	u8_t port[2];
-	u8_t byte[2];
-};
-
-/** Runtime driver data */
-struct gpio_pca95xx_drv_data {
-	/* gpio_driver_data needs to be first */
-	struct gpio_driver_data common;
-
-	/** Master I2C device */
-	struct device *i2c_master;
-
-	struct {
-		union gpio_pca95xx_port_data output;
-		union gpio_pca95xx_port_data dir;
-		union gpio_pca95xx_port_data pud_en;
-		union gpio_pca95xx_port_data pud_sel;
-	} reg_cache;
-};
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* ZEPHYR_DRIVERS_GPIO_GPIO_PCA95XX_H_ */