diff --git a/src/gpu.cpp b/src/gpu.cpp
index 3e9491ef4b2..7e5274d1d70 100644
--- a/src/gpu.cpp
+++ b/src/gpu.cpp
@@ -1129,6 +1129,8 @@ static int find_default_vulkan_device_index()
 
 int create_gpu_instance(const char* driver_path)
 {
+    destroy_gpu_instance();
+
     MutexLockGuard lock(g_instance_lock);
 
     if (g_instance.created != 0)
diff --git a/src/simplevk.cpp b/src/simplevk.cpp
index a9be51a8b0b..d0ae01f7ef6 100644
--- a/src/simplevk.cpp
+++ b/src/simplevk.cpp
@@ -61,6 +61,8 @@ PFN_vkEnumerateInstanceLayerProperties vkEnumerateInstanceLayerProperties = 0;
 
 int load_vulkan_driver(const char* /*driver_path*/)
 {
+    unload_vulkan_driver();
+
     vkGetInstanceProcAddr = ::vkGetInstanceProcAddr;
     vkEnumerateInstanceExtensionProperties = (PFN_vkEnumerateInstanceExtensionProperties)vkGetInstanceProcAddr(NULL, "vkEnumerateInstanceExtensionProperties");
     vkCreateInstance = (PFN_vkCreateInstance)vkGetInstanceProcAddr(NULL, "vkCreateInstance");
@@ -68,14 +70,12 @@ int load_vulkan_driver(const char* /*driver_path*/)
     return 0;
 }
 
-int unload_vulkan_driver()
+void unload_vulkan_driver()
 {
     vkGetInstanceProcAddr = 0;
     vkEnumerateInstanceExtensionProperties = 0;
     vkCreateInstance = 0;
     vkEnumerateInstanceLayerProperties = 0;
-
-    return 0;
 }
 
 #else // __APPLE__