diff --git a/src/sbbs3/mailsrvr.c b/src/sbbs3/mailsrvr.c
index a9a41f0fd4d9583971112a7ef1416644475c3557..5d328a44888f5241ba1129974ac477927a8bef86 100644
--- a/src/sbbs3/mailsrvr.c
+++ b/src/sbbs3/mailsrvr.c
@@ -108,7 +108,7 @@ static int		mailproc_count;
 static js_server_props_t js_server_props;
 static link_list_t current_logins;
 static link_list_t current_connections;
-static savemsg_mutex_created = false;
+static bool savemsg_mutex_created = false;
 static pthread_mutex_t savemsg_mutex;
 
 static const char* servprot_smtp = "SMTP";