diff --git a/exec/load/syncterm_cache.js b/exec/load/syncterm_cache.js
index f1df97ebd1cf3cd4a01ddddb463978fa9f43427f..77aae3b2ab1cae0224957ffd2307be249a5bdd69 100644
--- a/exec/load/syncterm_cache.js
+++ b/exec/load/syncterm_cache.js
@@ -89,7 +89,7 @@ SyncTERMCache.prototype.upload = function (fname, cache_fname)
 
 	// Check for the file in the cache...
 	console.write('\x1b_SyncTERM:C;L;'+cache_fname+'\x1b\\');
-	var lst = read_apc();
+	var lst = this.read_apc();
 	var idx = lst.indexOf('\n' + cache_fname + '\t');
 	if (idx !== -1) {
 		idx += 2;