diff --git a/src/sync-log.cc b/src/sync-log.cc
index 4298a9e..06eb1e7 100644
--- a/src/sync-log.cc
+++ b/src/sync-log.cc
@@ -32,7 +32,7 @@
 using namespace std;
 using namespace Ccnx;
 
-void xTrace (void*, const char* q)
+static  void xTrace (void*, const char* q)
 {
   cout << q << endl;
 }