diff --git a/lld/lib/ReaderWriter/PECOFF/WriterImportLibrary.cpp b/lld/lib/ReaderWriter/PECOFF/WriterImportLibrary.cpp
index d6081c1cf4b8..fd3360f018b6 100644
--- a/lld/lib/ReaderWriter/PECOFF/WriterImportLibrary.cpp
+++ b/lld/lib/ReaderWriter/PECOFF/WriterImportLibrary.cpp
@@ -35,6 +35,8 @@ createModuleDefinitionFile(const PECOFFLinkingContext &ctx) {
     os << "  ";
     if (!desc.externalName.empty()) {
       os << desc.externalName;
+    } else if (!desc.mangledName.empty()) {
+      os << ctx.undecorateSymbol(desc.mangledName);
     } else {
       os << ctx.undecorateSymbol(desc.name);
     }
diff --git a/lld/test/pecoff/Inputs/exports2.def b/lld/test/pecoff/Inputs/exports2.def
new file mode 100644
index 000000000000..1c95f42ceb60
--- /dev/null
+++ b/lld/test/pecoff/Inputs/exports2.def
@@ -0,0 +1,6 @@
+; This is a comment line
+
+EXPORTS
+  exportfn1 @5   ; foo
+  exportfn7
+  exportfn5=exportfn6 PRIVATE
diff --git a/lld/test/pecoff/exportlib2.test b/lld/test/pecoff/exportlib2.test
index b2b070b23249..e846b0bdd064 100644
--- a/lld/test/pecoff/exportlib2.test
+++ b/lld/test/pecoff/exportlib2.test
@@ -1,8 +1,8 @@
 # RUN: yaml2obj %p/Inputs/export.obj.yaml > %t.obj
 #
 # RUN: lld -flavor link /out:%t.dll /dll /entry:init \
-# RUN:   /export:exportfn1 /export:exportfn2 /lldmoduledeffile:%t.def -- %t.obj
-# RUN: FileCheck -check-prefix=CHECK1 %s < %t.def
+# RUN:   /export:exportfn1 /export:exportfn2 /lldmoduledeffile:%t1.def -- %t.obj
+# RUN: FileCheck -check-prefix=CHECK1 %s < %t1.def
 
 CHECK1: LIBRARY "exportlib2.test.tmp.dll"
 CHECK1: EXPORTS
@@ -11,11 +11,11 @@ CHECK1:   exportfn2 @2
 CHECK1:   exportfn3@256 @3
 
 # RUN: lld -flavor link /out:%t.dll /dll /entry:init \
-# RUN:   /def:%p/Inputs/exports.def /lldmoduledeffile:%t.def -- %t.obj
-# RUN: FileCheck -check-prefix=CHECK2 %s < %t.def
+# RUN:   /def:%p/Inputs/exports2.def /lldmoduledeffile:%t2.def -- %t.obj
+# RUN: FileCheck -check-prefix=CHECK2 %s < %t2.def
 
 CHECK2: LIBRARY "exportlib2.test.tmp.dll"
 CHECK2: EXPORTS
 CHECK2:   exportfn1 @5
-CHECK2:   exportfn2 @6
-CHECK2:   exportfn3@256 @7
+CHECK2:   exportfn3@256 @6
+CHECK2:   exportfn7@8 @7