diff --git a/src/smblib/smbstr.c b/src/smblib/smbstr.c
index 0929e2bbcd38775a292c068c83f41250d33a90e9..01c807c22135d86f58c4463114671222af7d1ab3 100644
--- a/src/smblib/smbstr.c
+++ b/src/smblib/smbstr.c
@@ -300,6 +300,7 @@ fidoaddr_t SMBCALL smb_atofaddr(const fidoaddr_t* sys_addr, const char *str)
 
 /****************************************************************************/
 /* Returns ASCIIZ representation of network address (net_t)					*/
+/* NOT THREAD-SAFE!															*/
 /****************************************************************************/
 char* SMBCALL smb_netaddr(net_t* net)
 {