diff --git a/renderdoc/driver/vulkan/vk_initstate.cpp b/renderdoc/driver/vulkan/vk_initstate.cpp
index 58ad96bf0..0fb5ce445 100644
--- a/renderdoc/driver/vulkan/vk_initstate.cpp
+++ b/renderdoc/driver/vulkan/vk_initstate.cpp
@@ -506,13 +506,6 @@ bool WrappedVulkan::Prepare_InitialState(WrappedVkRes *res)
     if(readbackmem.mem == VK_NULL_HANDLE)
       return false;
 
-    // dummy request to keep the validation layers happy - the buffers are identical so the
-    // requirements must be identical
-    {
-      VkMemoryRequirements mrq = {0};
-      ObjDisp(d)->GetBufferMemoryRequirements(Unwrap(d), Unwrap(dstBuf), &mrq);
-    }
-
     CheckVkResult(vkr);
     vkr = ObjDisp(d)->BindBufferMemory(Unwrap(d), Unwrap(dstBuf), Unwrap(readbackmem.mem),
                                        readbackmem.offs);
diff --git a/renderdoc/driver/vulkan/vk_outputwindow.cpp b/renderdoc/driver/vulkan/vk_outputwindow.cpp
index 959bdff76..df199aedc 100644
--- a/renderdoc/driver/vulkan/vk_outputwindow.cpp
+++ b/renderdoc/driver/vulkan/vk_outputwindow.cpp
@@ -693,7 +693,7 @@ void VulkanReplay::GetOutputWindowData(uint64_t id, bytebuf &retData)
   vt->GetBufferMemoryRequirements(Unwrap(device), readbackBuf, &mrq);
 
   VkMemoryAllocateInfo allocInfo = {
-      VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO, NULL, bufInfo.size,
+      VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO, NULL, mrq.size,
       m_pDriver->GetReadbackMemoryIndex(mrq.memoryTypeBits),
   };
 
diff --git a/renderdoc/driver/vulkan/vk_replay.cpp b/renderdoc/driver/vulkan/vk_replay.cpp
index 3a66b7495..6b9937a2d 100644
--- a/renderdoc/driver/vulkan/vk_replay.cpp
+++ b/renderdoc/driver/vulkan/vk_replay.cpp
@@ -3861,7 +3861,7 @@ void VulkanReplay::GetTextureData(ResourceId tex, const Subresource &sub,
   vt->GetBufferMemoryRequirements(Unwrap(dev), readbackBuf, &mrq);
 
   VkMemoryAllocateInfo allocInfo = {
-      VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO, NULL, dataSize,
+      VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO, NULL, mrq.size,
       m_pDriver->GetReadbackMemoryIndex(mrq.memoryTypeBits),
   };