diff --git a/vulkan_funcs.d b/vulkan_funcs.d
index 22d0932..8774414 100644
--- a/vulkan_funcs.d
+++ b/vulkan_funcs.d
@@ -133,8 +133,7 @@ LoadDeviceFunc(alias fn, alias vk)()
 	import std.string : chompPrefix;
 	enum string fn_str   = __traits(identifier, fn);
 	enum string vk_str   = __traits(identifier, vk);
-	enum string type_str = typeof(fn).stringof;
-	return format("%s = cast(%s)vkGetDeviceProcAddr(%s.device, \"%s\"); assert(%s != null, \"Function pointer %s is null\");", fn_str, type_str, vk_str, chompPrefix(type_str, "PFN_"), fn_str, fn_str);
+	return format("%s = cast(typeof(%s))vkGetDeviceProcAddr(%s.device, \"%s\"); assert(%s != null, \"Function pointer %s is null\");", fn_str, fn_str, vk_str, chompPrefix(type_str, "PFN_"), fn_str, fn_str);
 }
 
 static string
@@ -145,7 +144,7 @@ LoadInstanceFunc(alias fn, alias vk)()
 	enum string fn_str   = __traits(identifier, fn);
 	enum string vk_str   = __traits(identifier, vk);
 	enum string type_str = typeof(fn).stringof;
-	return format("%s = cast(%s)vkGetInstanceProcAddr(%s.instance, \"%s\"); assert(%s != null, \"Function pointer %s is null\");", fn_str, type_str, vk_str, chomp_prefix(type_str, "PFN_"), fn_str, fn_str);
+	return format("%s = cast(typeof(%s))vkGetInstanceProcAddr(%s.instance, \"%s\"); assert(%s != null, \"Function pointer %s is null\");", fn_str, fn_str, vk_str, chomp_prefix(type_str, "PFN_"), fn_str, fn_str);
 }
 
 void