diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
index cf69161caa..c0e368ea94 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
@@ -880,7 +880,7 @@ PiCpuSmmEntry (
     BufferPages = EFI_SIZE_TO_PAGES (SIZE_32KB + TileSize * (mMaxNumberOfCpus - 1));
     Buffer      = AllocateAlignedCodePages (BufferPages, SIZE_4KB);
     if (Buffer == NULL) {
-      DEBUG ((DEBUG_ERROR, "Failed to allocate %d pages.\n", BufferPages));
+      DEBUG ((DEBUG_ERROR, "Failed to allocate %Lu pages.\n", (UINT64)BufferPages));
       CpuDeadLoop ();
       return EFI_OUT_OF_RESOURCES;
     }