diff --git a/apps/app_queue.c b/apps/app_queue.c
index e3ab53b54148036844d73553577c4b5581fd16e4..8205b3b7c386fea988bdf4545ceb27f5c7b5de1e 100644
--- a/apps/app_queue.c
+++ b/apps/app_queue.c
@@ -5910,10 +5910,12 @@ static void setup_mixmonitor(struct queue_ent *qe, const char *filename)
 	char escaped_filename[256];
 	char file_with_ext[256];
 	char mixmonargs[1512];
-	char escaped_monitor_exec[1024] = "\0";
+	char escaped_monitor_exec[1024];
 	const char *monitor_options;
 	const char *monitor_exec;
 
+	escaped_monitor_exec[0] = '\0';
+
 	if (filename) {
 		escape_and_substitute(qe->chan, filename, escaped_filename, sizeof(escaped_filename));
 	} else {