diff --git a/base/vulkantextoverlay.hpp b/base/vulkantextoverlay.hpp
index 7aecd00c..08cbcda8 100644
--- a/base/vulkantextoverlay.hpp
+++ b/base/vulkantextoverlay.hpp
@@ -197,7 +197,7 @@ public:
 		VkMemoryRequirements memReqs;
 		VkMemoryAllocateInfo allocInfo = vkTools::initializers::memoryAllocateInfo();
 		vkGetImageMemoryRequirements(vulkanDevice->logicalDevice, image, &memReqs);
-		allocInfo.allocationSize = STB_FONT_WIDTH * STB_NUM_CHARS;
+		allocInfo.allocationSize = memReqs.size;
 		allocInfo.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
 		VK_CHECK_RESULT(vkAllocateMemory(vulkanDevice->logicalDevice, &allocInfo, nullptr, &imageMemory));
 		VK_CHECK_RESULT(vkBindImageMemory(vulkanDevice->logicalDevice, image, imageMemory, 0));
@@ -212,7 +212,7 @@ public:
 			allocInfo.allocationSize));
 
 		stagingBuffer.map();
-		memcpy(stagingBuffer.mapped, &font24pixels[0][0], STB_FONT_WIDTH * STB_FONT_HEIGHT);
+		memcpy(stagingBuffer.mapped, &font24pixels[0][0], STB_FONT_WIDTH * STB_FONT_HEIGHT);	// Only one channel, so data size = W * H (*R8)
 		stagingBuffer.unmap();
 
 		// Copy to image
diff --git a/textoverlay/textoverlay.cpp b/textoverlay/textoverlay.cpp
index ddc2d5fb..e0f51550 100644
--- a/textoverlay/textoverlay.cpp
+++ b/textoverlay/textoverlay.cpp
@@ -234,6 +234,7 @@ public:
 
 		uint8_t *data;
 		VK_CHECK_RESULT(vkMapMemory(vulkanDevice->logicalDevice, stagingBuffer.memory, 0, allocInfo.allocationSize, 0, (void **)&data));
+		// Size of the font texture is WIDTH * HEIGHT * 1 byte (only one channel)
 		memcpy(data, &font24pixels[0][0], STB_FONT_WIDTH * STB_FONT_HEIGHT);
 		vkUnmapMemory(vulkanDevice->logicalDevice, stagingBuffer.memory);