diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index c3c529973c..68d603af85 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -1386,7 +1386,7 @@ std::string cmLocalGenerator::GetIncludeFlags(
 
 //----------------------------------------------------------------------------
 void cmLocalGenerator::AddCompileDefinitions(std::set<std::string>& defines,
-                                             cmTarget* target,
+                                             cmTarget const* target,
                                              const char* config)
 {
   std::vector<std::string> targetDefines;
diff --git a/Source/cmLocalGenerator.h b/Source/cmLocalGenerator.h
index 9a89f0f9fc..ad662d58c8 100644
--- a/Source/cmLocalGenerator.h
+++ b/Source/cmLocalGenerator.h
@@ -224,8 +224,9 @@ public:
                              bool stripImplicitInclDirs = true);
   void AddCompileOptions(std::string& flags, cmTarget* target,
                          const char* lang, const char* config);
-  void AddCompileDefinitions(std::set<std::string>& defines, cmTarget* target,
-                         const char* config);
+  void AddCompileDefinitions(std::set<std::string>& defines,
+                             cmTarget const* target,
+                             const char* config);
 
   /** Compute the language used to compile the given source file.  */
   const char* GetSourceFileLanguage(const cmSourceFile& source);