diff --git a/tutorial/c_glib/c_glib_server.c b/tutorial/c_glib/c_glib_server.c
index 1b7f6c4..47bf47f 100644
--- a/tutorial/c_glib/c_glib_server.c
+++ b/tutorial/c_glib/c_glib_server.c
@@ -440,7 +440,7 @@
 
   struct sigaction sigint_action;
 
-  GError *error;
+  GError *error = NULL;
   int exit_status = 0;
 
 #if (!GLIB_CHECK_VERSION (2, 36, 0))