diff --git a/lld/COFF/MapFile.cpp b/lld/COFF/MapFile.cpp
index 00e4788f872d..05b65a3e00e6 100644
--- a/lld/COFF/MapFile.cpp
+++ b/lld/COFF/MapFile.cpp
@@ -36,7 +36,8 @@ using namespace lld::coff;
 
 static void writeOutSecLine(raw_fd_ostream &OS, uint64_t Address, uint64_t Size,
                             uint64_t Align, StringRef Name) {
-  OS << format("%08x %08x %5x ", Address, Size, Align) << left_justify(Name, 7);
+  OS << format("%08llx %08llx %5llx ", Address, Size, Align)
+     << left_justify(Name, 7);
 }
 
 static void writeInSecLine(raw_fd_ostream &OS, uint64_t Address, uint64_t Size,