diff --git a/Source/cmCablePackageCommand.cxx b/Source/cmCablePackageCommand.cxx
index af835a53e..3b19f15b1 100644
--- a/Source/cmCablePackageCommand.cxx
+++ b/Source/cmCablePackageCommand.cxx
@@ -15,6 +15,7 @@
 =========================================================================*/
 #include "cmCablePackageCommand.h"
 #include "cmCacheManager.h"
+#include "cmTarget.h"
 
 
 cmCablePackageCommand::~cmCablePackageCommand()
@@ -115,6 +116,9 @@ bool cmCablePackageCommand::Invoke(std::vector<std::string>& args)
                                depends,
                                outputs, m_TargetName.c_str());
   
+  // add the source list to the target
+  m_Makefile->GetTargets()[m_TargetName.c_str()].m_SourceLists.push_back(m_PackageName);
+
   return true;
 }
 
diff --git a/Source/cmMakefile.h b/Source/cmMakefile.h
index f72a6ed9a..fd12074ea 100644
--- a/Source/cmMakefile.h
+++ b/Source/cmMakefile.h
@@ -275,7 +275,7 @@ public:
   /**
    * Get the list of targets
    */
-  const cmTargets &GetTargets() { return m_Targets; }
+  cmTargets &GetTargets() { return m_Targets; }
 
   /**
    * Get a list of the build subdirectories.