diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index e1998e420..81854f316 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -2004,7 +2004,7 @@ void cmLocalGenerator::OutputLinkLibraries(std::string& linkLibraries,
 
 //----------------------------------------------------------------------------
 void cmLocalGenerator::AddArchitectureFlags(std::string& flags,
-                                            cmGeneratorTarget* target,
+                                            cmGeneratorTarget const* target,
                                             const std::string& lang,
                                             const std::string& config)
 {
@@ -2191,7 +2191,7 @@ void cmLocalGenerator::AddSharedFlags(std::string& flags,
 
 //----------------------------------------------------------------------------
 void cmLocalGenerator::
-AddCompilerRequirementFlag(std::string &flags, cmTarget* target,
+AddCompilerRequirementFlag(std::string &flags, cmTarget const* target,
                            const std::string& lang)
 {
   if (lang.empty())
@@ -2313,7 +2313,8 @@ AddCompilerRequirementFlag(std::string &flags, cmTarget* target,
     }
 }
 
-static void AddVisibilityCompileOption(std::string &flags, cmTarget* target,
+static void AddVisibilityCompileOption(std::string &flags,
+                                       cmTarget const* target,
                                        cmLocalGenerator *lg,
                                        const std::string& lang)
 {
@@ -2347,7 +2348,7 @@ static void AddVisibilityCompileOption(std::string &flags, cmTarget* target,
 }
 
 static void AddInlineVisibilityCompileOption(std::string &flags,
-                                       cmTarget* target,
+                                       cmTarget const* target,
                                        cmLocalGenerator *lg)
 {
   std::string compileOption
@@ -2368,7 +2369,7 @@ static void AddInlineVisibilityCompileOption(std::string &flags,
 
 //----------------------------------------------------------------------------
 void cmLocalGenerator
-::AddVisibilityPresetFlags(std::string &flags, cmTarget* target,
+::AddVisibilityPresetFlags(std::string &flags, cmTarget const* target,
                             const std::string& lang)
 {
   int targetType = target->GetType();
@@ -2394,7 +2395,8 @@ void cmLocalGenerator
 }
 
 //----------------------------------------------------------------------------
-void cmLocalGenerator::AddCMP0018Flags(std::string &flags, cmTarget* target,
+void cmLocalGenerator::AddCMP0018Flags(std::string &flags,
+                                       cmTarget const* target,
                                        std::string const& lang,
                                        const std::string& config)
 {
diff --git a/Source/cmLocalGenerator.h b/Source/cmLocalGenerator.h
index 6cdee42c9..a005f5ffc 100644
--- a/Source/cmLocalGenerator.h
+++ b/Source/cmLocalGenerator.h
@@ -138,18 +138,19 @@ public:
   std::vector<cmLocalGenerator*>& GetChildren() { return this->Children; }
 
 
-  void AddArchitectureFlags(std::string& flags, cmGeneratorTarget* target,
+  void AddArchitectureFlags(std::string& flags,
+                            cmGeneratorTarget const* target,
                             const std::string&lang, const std::string& config);
 
   void AddLanguageFlags(std::string& flags, const std::string& lang,
                         const std::string& config);
-  void AddCMP0018Flags(std::string &flags, cmTarget* target,
+  void AddCMP0018Flags(std::string &flags, cmTarget const* target,
                        std::string const& lang, const std::string& config);
-  void AddVisibilityPresetFlags(std::string &flags, cmTarget* target,
+  void AddVisibilityPresetFlags(std::string &flags, cmTarget const* target,
                                 const std::string& lang);
   void AddConfigVariableFlags(std::string& flags, const std::string& var,
                               const std::string& config);
-  void AddCompilerRequirementFlag(std::string &flags, cmTarget* target,
+  void AddCompilerRequirementFlag(std::string &flags, cmTarget const* target,
                                   const std::string& lang);
   ///! Append flags to a string.
   virtual void AppendFlags(std::string& flags, const std::string& newFlags);