diff --git a/Source/cmCreateTestSourceList.cxx b/Source/cmCreateTestSourceList.cxx
index 5fea91c36..440dbd9ae 100644
--- a/Source/cmCreateTestSourceList.cxx
+++ b/Source/cmCreateTestSourceList.cxx
@@ -248,11 +248,13 @@ bool cmCreateTestSourceList::InitialPass(std::vector<std::string> const& argsIn)
     "    test_name = lowercase(cmakeGeneratedFunctionMapEntries[i].name);\n"
     "    if (partial_match && strstr(test_name, arg) != NULL)\n"
     "      {\n"
+    "      free(arg);\n"
     "      free(test_name);\n"
     "      return (*cmakeGeneratedFunctionMapEntries[i].func)(ac - 2, av + 2);\n"
     "      }\n"
     "    else if (!partial_match && strcmp(test_name, arg) == 0)\n"
     "      {\n"
+    "      free(arg);\n"
     "      free(test_name);\n"
     "      return (*cmakeGeneratedFunctionMapEntries[i].func)(ac - 1, av + 1);\n"
     "      }\n"