diff --git a/runtime/src/launch/aprun/launch-aprun.c b/runtime/src/launch/aprun/launch-aprun.c
index 1c763202a3ef..02dce5d756d3 100644
--- a/runtime/src/launch/aprun/launch-aprun.c
+++ b/runtime/src/launch/aprun/launch-aprun.c
@@ -29,6 +29,9 @@
 #include "error.h"
 #include "aprun-utils.h"
 
+// #define baseSysFilename ".chpl-sys-"
+// // char sysFilename[FILENAME_MAX];
+
 #define CHPL_CC_ARG "-cc"
 static const char *_ccArg = NULL;
 static const char* debug = NULL;