diff --git a/fence.cpp b/fence.cpp
index 8db0cb4..3b8259d 100644
--- a/fence.cpp
+++ b/fence.cpp
@@ -42,7 +42,7 @@ fence::reset (const device &dev, fence *first, fence *last)
     CHECK_LE (first, last);
 
     cruft::vk::error::try_func (
-        &vkResetFences, dev.id (), trunc_cast<uint32_t> (last - first), &first->id ()
+        vkResetFences, dev.id (), trunc_cast<uint32_t> (last - first), &first->id ()
     );
 }
 
@@ -54,7 +54,7 @@ fence::wait (const device &d, fence *first, fence *last, uint64_t timeout)
     CHECK_LE (first, last);
 
     cruft::vk::error::try_func (
-        &vkWaitForFences, d.id (), trunc_cast<uint32_t> (last - first), &first->id (), VK_FALSE, timeout
+        vkWaitForFences, d.id (), trunc_cast<uint32_t> (last - first), &first->id (), VK_FALSE, timeout
     );
 }
 
@@ -66,6 +66,6 @@ fence::wait_all (const device &d, fence *first, fence *last, uint64_t timeout)
     CHECK_LE (first, last);
 
     cruft::vk::error::try_func (
-        &vkWaitForFences, d.id (), trunc_cast<uint32_t> (last - first), &first->id (), VK_TRUE, timeout
+        vkWaitForFences, d.id (), trunc_cast<uint32_t> (last - first), &first->id (), VK_TRUE, timeout
     );
 }
diff --git a/object.cpp b/object.cpp
index 36a9520..60de879 100644
--- a/object.cpp
+++ b/object.cpp
@@ -76,15 +76,15 @@ VK_DESCENDANT_TYPE_MAP (DESCENDANT)
 ///////////////////////////////////////////////////////////////////////////////
 template <typename T>
 std::vector<T>
-cruft::vk::enumerated<T>::find (const instance &inst) {
+cruft::vk::enumerated<T>::find (const instance &parent) {
     // find the total number of objects
     uint32_t expected = 0;
-    error::try_code (enum_traits<T>::enumerate (inst.id (), &expected, nullptr));
+    error::try_code (enum_traits<T>::enumerate (parent.id (), &expected, nullptr));
 
     // allocate an array of handles and fetch them
     uint32_t found = expected;
     typename T::id_t handles[expected];
-    error::try_code (enum_traits<T>::enumerate (inst.id (), &found, handles));
+    error::try_code (enum_traits<T>::enumerate (parent.id (), &found, handles));
 
     // return an collection of objects from the handles
     return std::vector<T> (handles, handles + found);
diff --git a/object.hpp b/object.hpp
index 0fc65c7..2f128a5 100644
--- a/object.hpp
+++ b/object.hpp
@@ -105,7 +105,8 @@ namespace cruft::vk {
     struct enumerated : public object<T> {
         using object<T>::object;
 
-        static std::vector<T> find (const instance&);
+        static std::vector<T>
+        find (const instance &parent);
     };
 
 
diff --git a/tools/hello.cpp b/tools/hello.cpp
index 8810895..70f4166 100644
--- a/tools/hello.cpp
+++ b/tools/hello.cpp
@@ -105,7 +105,7 @@ main (void)
         auto func = (decltype(&vkCreateDebugReportCallbackEXT))vkGetInstanceProcAddr (instance.id (),"vkCreateDebugReportCallbackEXT");
 
         cruft::vk::error::try_func (
-            func, instance.id (), &debug_info, nullptr, &callback
+            *func, instance.id (), &debug_info, nullptr, &callback
         );
     }
 
@@ -584,14 +584,14 @@ main (void)
     present_info.pImageIndices = &image_index;
     present_info.pResults = nullptr;
 
-    cruft::vk::error::try_func (&vkQueuePresentKHR, present_queue.id (), &present_info);
+    cruft::vk::error::try_func (vkQueuePresentKHR, present_queue.id (), &present_info);
 
     LOG_INFO ("entering runloop");
     while (!glfwWindowShouldClose (window)) {
         glfwPollEvents ();
     }
 
-    cruft::vk::error::try_func (&vkDeviceWaitIdle, ldevice.id ());
+    cruft::vk::error::try_func (vkDeviceWaitIdle, ldevice.id ());
 
     LOG_INFO ("terminating glfw");
     glfwDestroyWindow (window);