diff --git a/Source/CPack/cmCPackFreeBSDGenerator.cxx b/Source/CPack/cmCPackFreeBSDGenerator.cxx
index dd8127d897..9fdafa47b4 100644
--- a/Source/CPack/cmCPackFreeBSDGenerator.cxx
+++ b/Source/CPack/cmCPackFreeBSDGenerator.cxx
@@ -181,7 +181,7 @@ public:
   {
     s << "{\n";
     for (std::string const& elem : value) {
-      s << "  \"" << elem << "\": {\"origin\": \"" << elem << "\"},\n";
+      s << "  \"" << elem << R"(": {"origin": ")" << elem << "\"},\n";
     }
     s << '}';
   }