diff --git a/src/main.rs b/src/main.rs
index e909f0c..6fe24e2 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -99,7 +99,11 @@ impl VulkanApp {
         };
 
         let vk_result = unsafe {
-            ffi_vk::vkCreateInstance(std::ptr::addr_of!(create_info), std::ptr::null(), std::ptr::addr_of_mut!(self.vk_instance))
+            ffi_vk::vkCreateInstance(
+                std::ptr::addr_of!(create_info),
+                std::ptr::null(),
+                std::ptr::addr_of_mut!(self.vk_instance),
+            )
         };
 
         if vk_result != ffi_vk::VkResult_VK_SUCCESS {
@@ -112,6 +116,10 @@ impl VulkanApp {
             panic!("ERROR: Cannot execute main loop if window is null!");
         }
 
+        if self.vk_instance.is_null() {
+            panic!("ERROR: Cannot execute main loop if vk_instance is null!");
+        }
+
         loop {
             unsafe {
                 if ffi_glfw::glfwWindowShouldClose(self.window) != 0 {