diff --git a/include/types/checks.h b/include/types/checks.h
index dd20184..283ff3d 100644
--- a/include/types/checks.h
+++ b/include/types/checks.h
@@ -41,6 +41,7 @@
 #define CHK_ST_ENABLED          0x0004  /* this check is currently administratively enabled */
 #define CHK_ST_PAUSED           0x0008  /* checks are paused because of maintenance (health only) */
 #define CHK_ST_AGENT            0x0010  /* check is an agent check (otherwise it's a health check) */
+#define CHK_ST_PORT_MISS        0x0020  /* check can't be send because no port is configured to run it */
 
 /* check status */
 enum {
diff --git a/include/types/stream.h b/include/types/stream.h
index 17e74b8..0d8c500 100644
--- a/include/types/stream.h
+++ b/include/types/stream.h
@@ -73,6 +73,7 @@
 #define SF_ERR_DOWN     0x00009000	/* the proxy killed a stream because the backend became unavailable */
 #define SF_ERR_KILLED   0x0000a000	/* the proxy killed a stream because it was asked to do so */
 #define SF_ERR_UP       0x0000b000	/* the proxy killed a stream because a preferred backend became available */
+#define SF_ERR_CHK_PORT 0x0000c000	/* no port could be found for a health check. TODO: check SF_ERR_SHIFT */
 #define SF_ERR_MASK     0x0000f000	/* mask to get only stream error flags */
 #define SF_ERR_SHIFT    12		/* bit shift */