diff --git a/src/modules/ctl/binrpc.h b/src/modules/ctl/binrpc.h
index 56a8e26cd6b..29e06670ed0 100644
--- a/src/modules/ctl/binrpc.h
+++ b/src/modules/ctl/binrpc.h
@@ -434,7 +434,7 @@ inline static int binrpc_add_str_type(struct binrpc_pkt* pkt, char* s, int len,
 
 
 
-/* adds an avp (name, value) pair, usefull to add structure members */
+/* adds an avp (name, value) pair, useful to add structure members */
 inline static int binrpc_addavp(struct binrpc_pkt* pkt, struct binrpc_val* avp)
 {
 	int ret;