diff --git a/src/irc/core/irc-cap.c b/src/irc/core/irc-cap.c
index 5ab8d94f..898a4a20 100644
--- a/src/irc/core/irc-cap.c
+++ b/src/irc/core/irc-cap.c
@@ -296,7 +296,7 @@ static void event_invalid_cap (IRC_SERVER_REC *server, const char *data, const c
 	irc_send_cmd_now(server, "CAP END");
 }
 
-void cap_init (void)
+void irc_cap_init (void)
 {
 	signal_add_first("event cap", (SIGNAL_FUNC) event_cap);
 	signal_add_first("event 410", (SIGNAL_FUNC) event_invalid_cap);
diff --git a/src/irc/core/irc-cap.h b/src/irc/core/irc-cap.h
index df957cd2..cbfeae62 100644
--- a/src/irc/core/irc-cap.h
+++ b/src/irc/core/irc-cap.h
@@ -1,7 +1,8 @@
 #ifndef __IRC_CAP_H
 #define __IRC_CAP_H
 
-void cap_init(void);
+/* this is prefixed as to not conflict with an AIX/i function in their stdlib */
+void irc_cap_init(void);
 void cap_deinit(void);
 int cap_toggle (IRC_SERVER_REC *server, char *cap, int enable);
 void cap_finish_negotiation (IRC_SERVER_REC *server);
diff --git a/src/irc/core/irc-core.c b/src/irc/core/irc-core.c
index a9221e02..ccd84027 100644
--- a/src/irc/core/irc-core.c
+++ b/src/irc/core/irc-core.c
@@ -119,7 +119,7 @@ void irc_core_init(void)
 	lag_init();
 	netsplit_init();
 	irc_expandos_init();
-	cap_init();
+	irc_cap_init();
 	sasl_init();
 
 	settings_check();