diff --git a/Source/cmTarget.cxx b/Source/cmTarget.cxx
index d3170e4ae..316d85cef 100644
--- a/Source/cmTarget.cxx
+++ b/Source/cmTarget.cxx
@@ -1350,13 +1350,6 @@ cmTarget::AddSystemIncludeDirectories(const std::set<std::string> &incs)
   this->SystemIncludeDirectories.insert(incs.begin(), incs.end());
 }
 
-//----------------------------------------------------------------------------
-void
-cmTarget::AddSystemIncludeDirectories(const std::vector<std::string> &incs)
-{
-  this->SystemIncludeDirectories.insert(incs.begin(), incs.end());
-}
-
 #if defined(_WIN32) && !defined(__CYGWIN__)
 //----------------------------------------------------------------------------
 void
diff --git a/Source/cmTarget.h b/Source/cmTarget.h
index 490aaa350..2007b4096 100644
--- a/Source/cmTarget.h
+++ b/Source/cmTarget.h
@@ -427,7 +427,6 @@ public:
                                   cmTarget::LinkLibraryType llt) const;
 
   void AddSystemIncludeDirectories(const std::set<std::string> &incs);
-  void AddSystemIncludeDirectories(const std::vector<std::string> &incs);
   std::set<std::string> const & GetSystemIncludeDirectories() const
     { return this->SystemIncludeDirectories; }