diff --git a/src/src/main.cc b/src/src/main.cc
index faa01eeb..3d743513 100644
--- a/src/src/main.cc
+++ b/src/src/main.cc
@@ -530,6 +530,7 @@ tproject_set_args(int argc, char **argv)
             }
 
             strncpy(_community_host, s, n);
+            _community_host[n] = '\0';
             s += n;
 
             if (*s == '\0') {