diff --git a/xo-imgui/example/ex4a/VulkanApp.cpp b/xo-imgui/example/ex4a/VulkanApp.cpp
index 0ec3a6c3..3e3810a6 100644
--- a/xo-imgui/example/ex4a/VulkanApp.cpp
+++ b/xo-imgui/example/ex4a/VulkanApp.cpp
@@ -422,11 +422,32 @@ MinimalImGuiVulkan::init_imgui()
     //ImGui_ImplVulkan_Init(&init_info, render_pass_);
 
     // Upload Fonts
-    VkCommandBuffer command_buffer = beginSingleTimeCommands();
+    VkCommandBuffer command_buffer = begin_single_time_commands();
     ImGui_ImplVulkan_CreateFontsTexture();
     endSingleTimeCommands(command_buffer);
 
     //ImGui_ImplVulkan_DestroyFontUploadObjects();
 }
 
+VkCommandBuffer
+MinimalImGuiVulkan::begin_single_time_commands()
+{
+    VkCommandBufferAllocateInfo alloc_info{};
+    alloc_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
+    alloc_info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
+    alloc_info.commandPool = command_pool_;
+    alloc_info.commandBufferCount = 1;
+
+    VkCommandBuffer cmdbuf;
+    vkAllocateCommandBuffers(device_, &alloc_info, &cmdbuf);
+
+    VkCommandBufferBeginInfo begin_info{};
+    begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+    begin_info.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+
+    vkBeginCommandBuffer(cmdbuf, &begin_info);
+
+    return cmdbuf;
+}
+
 /* end VulkanApp.cpp */
diff --git a/xo-imgui/example/ex4a/VulkanApp.hpp b/xo-imgui/example/ex4a/VulkanApp.hpp
index 77b431fc..1bffd1b2 100644
--- a/xo-imgui/example/ex4a/VulkanApp.hpp
+++ b/xo-imgui/example/ex4a/VulkanApp.hpp
@@ -93,24 +93,10 @@ private:
     /* setup imgui "framework" */
     void init_imgui();
 
-    VkCommandBuffer beginSingleTimeCommands() {
-        VkCommandBufferAllocateInfo allocInfo{};
-        allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
-        allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
-        allocInfo.commandPool = command_pool_;
-        allocInfo.commandBufferCount = 1;
-
-        VkCommandBuffer commandBuffer;
-        vkAllocateCommandBuffers(device_, &allocInfo, &commandBuffer);
-
-        VkCommandBufferBeginInfo beginInfo{};
-        beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
-        beginInfo.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
-
-        vkBeginCommandBuffer(commandBuffer, &beginInfo);
-
-        return commandBuffer;
-    }
+    /* Allocate buffer for 'single-time' commands (to be run once?).
+     * Pair with call to end_single_time_commands()
+     */
+    VkCommandBuffer begin_single_time_commands();
 
     void endSingleTimeCommands(VkCommandBuffer commandBuffer) {
         vkEndCommandBuffer(commandBuffer);