diff --git a/tools/munin-node-c/main.c b/tools/munin-node-c/main.c
index 483ca810..bd05ecbd 100644
--- a/tools/munin-node-c/main.c
+++ b/tools/munin-node-c/main.c
@@ -10,7 +10,7 @@
 
 char VERSION[] = "1.0.0";
 
-int verbose;
+int verbose = 0;
 
 char* host = "";
 char* plugin_dir = "plugins";