diff --git a/renderdoc/driver/vulkan/vk_postvs.cpp b/renderdoc/driver/vulkan/vk_postvs.cpp
index 29549d1a7..54b5527d2 100644
--- a/renderdoc/driver/vulkan/vk_postvs.cpp
+++ b/renderdoc/driver/vulkan/vk_postvs.cpp
@@ -1468,7 +1468,7 @@ void VulkanReplay::InitPostVSBuffers(uint32_t eventId)
 
         if(IsDoubleFormat(origFormat))
           expandedFormat = VK_FORMAT_R32G32B32A32_UINT;
-        if(IsUIntFormat(origFormat))
+        else if(IsUIntFormat(origFormat))
           expandedFormat = VK_FORMAT_R32G32B32A32_UINT;
         else if(IsSIntFormat(origFormat))
           expandedFormat = VK_FORMAT_R32G32B32A32_SINT;