diff --git a/src/core/test/command-line-test-suite.cc b/src/core/test/command-line-test-suite.cc
index 0874b6e3f..0114ebb1d 100644
--- a/src/core/test/command-line-test-suite.cc
+++ b/src/core/test/command-line-test-suite.cc
@@ -60,6 +60,7 @@ CommandLineTestCaseBase::Parse (const CommandLine &cmd, int n, ...)
       args[i+1] = arg;
       i++;
     }
+  va_end (ap);
   int argc = n + 1;
   cmd.Parse (argc, args);
   delete [] args;