diff --git a/src/gfxstream/guest/vulkan_enc/HostVisibleMemoryVirtualization.cpp b/src/gfxstream/guest/vulkan_enc/HostVisibleMemoryVirtualization.cpp
index a54d7971018..c56489980d7 100644
--- a/src/gfxstream/guest/vulkan_enc/HostVisibleMemoryVirtualization.cpp
+++ b/src/gfxstream/guest/vulkan_enc/HostVisibleMemoryVirtualization.cpp
@@ -43,6 +43,7 @@ bool CoherentMemory::subAllocate(uint64_t size, uint8_t** ptr, uint64_t& offset)
     if (!block) return false;
 
     *ptr = mBaseAddr + block->ofs;
+    offset = block->ofs;
     return true;
 }