diff --git a/lib/AST/NestedNameSpecifier.cpp b/lib/AST/NestedNameSpecifier.cpp
index 0689ae1..6f1ec05 100644
--- a/lib/AST/NestedNameSpecifier.cpp
+++ b/lib/AST/NestedNameSpecifier.cpp
@@ -321,8 +321,11 @@
 }
 
 SourceRange NestedNameSpecifierLoc::getSourceRange() const {
+  if (!Qualifier)
+    return SourceRange();
+  
   NestedNameSpecifierLoc First = *this;
-  while (NestedNameSpecifierLoc Prefix= First.getPrefix())
+  while (NestedNameSpecifierLoc Prefix = First.getPrefix())
     First = Prefix;
   
   return SourceRange(First.getLocalSourceRange().getBegin(), 
@@ -330,6 +333,9 @@
 }
 
 SourceRange NestedNameSpecifierLoc::getLocalSourceRange() const {
+  if (!Qualifier)
+    return SourceRange();
+  
   unsigned Offset = getDataLength(Qualifier->getPrefix());
   switch (Qualifier->getKind()) {
   case NestedNameSpecifier::Global: