diff --git a/include/client.h b/include/client.h
index 2e69b17a..22fda3a1 100644
--- a/include/client.h
+++ b/include/client.h
@@ -449,6 +449,7 @@ struct ListClient
 #define CLICAP_AWAY_NOTIFY		0x0010
 #define CLICAP_TLS			0x0020
 #define CLICAP_USERHOST_IN_NAMES	0x0040
+#define CLICAP_CAP_NOTIFY		0x0080
 
 /*
  * flags macros.
diff --git a/modules/m_cap.c b/modules/m_cap.c
index 93830cf3..e88b8fad 100644
--- a/modules/m_cap.c
+++ b/modules/m_cap.c
@@ -77,6 +77,7 @@ static struct clicap
 	_CLICAP("away-notify", CLICAP_AWAY_NOTIFY, 0, 0, 0),
 	_CLICAP("tls", CLICAP_TLS, 0, 0, 0),
 	_CLICAP("userhost-in-names", CLICAP_USERHOST_IN_NAMES, 0, 0, 0),
+	_CLICAP("cap-notify", CLICAP_CAP_NOTIFY, 0, 0, 0),
 };
 
 #define CLICAP_LIST_LEN (sizeof(clicap_list) / sizeof(struct clicap))