diff --git a/tools/llvm-nm/llvm-nm.cpp b/tools/llvm-nm/llvm-nm.cpp
index 63fa75d884f..008c2e0431f 100644
--- a/tools/llvm-nm/llvm-nm.cpp
+++ b/tools/llvm-nm/llvm-nm.cpp
@@ -70,6 +70,7 @@ namespace {
 static char TypeCharForSymbol(GlobalValue &GV) {
   if (GV.isDeclaration())                                  return 'U';
   if (GV.hasLinkOnceLinkage())                             return 'C';
+  if (GV.hasCommonLinkage())                               return 'C';
   if (GV.hasWeakLinkage())                                 return 'W';
   if (isa<Function>(GV) && GV.hasInternalLinkage())        return 't';
   if (isa<Function>(GV))                                   return 'T';
diff --git a/tools/lto/lto.cpp b/tools/lto/lto.cpp
index d2cb3b8b43c..0a962fce1dd 100644
--- a/tools/lto/lto.cpp
+++ b/tools/lto/lto.cpp
@@ -65,7 +65,7 @@ void LLVMSymbol::mayBeNotUsed() {
   gv->setLinkage(GlobalValue::InternalLinkage); 
 }
 
-// Map LLVM LinkageType to LTO LinakgeType
+// Map LLVM LinkageType to LTO LinkageType
 static LTOLinkageTypes
 getLTOLinkageType(GlobalValue *v)
 {
@@ -76,6 +76,8 @@ getLTOLinkageType(GlobalValue *v)
     lt = LTOLinkOnceLinkage;
   else if (v->hasWeakLinkage())
     lt = LTOWeakLinkage;
+  else if (v->hasCommonLinkage())
+    lt = LTOCommonLinkage;
   else
     // Otherwise it is internal linkage for link time optimizer
     lt = LTOInternalLinkage;