diff --git a/include/sxt/errno.h b/include/sxt/errno.h
index ef6b0bb..904ed53 100644
--- a/include/sxt/errno.h
+++ b/include/sxt/errno.h
@@ -29,8 +29,22 @@
 #define SXT_SUCCESS     (SXT_EBASESHIFT - SXT_EBASESHIFT)
 #define SXT_EBASESHIFT  300
 
-#define SXT_ECRYPTO     (SXT_EBASESHIFT + 12)
-#define SXT_EINVAL      (SXT_EBASESHIFT + 22)
-#define SXT_ENOMEM      (SXT_EBASESHIFT + 42)
+#define SXT_ERROR           (SXT_EBASESHIFT + 1)
+#define SXT_EPROTO          (SXT_EBASESHIFT + 2)
+#define SXT_ESOCKET         (SXT_EBASESHIFT + 3)
+#define SXT_EBUSY           (SXT_EBASESHIFT + 4)
+#define SXT_EAGAIN          (SXT_EBASESHIFT + 5)
+#define SXT_ENOSUCHMSGTYPE  (SXT_EBASESHIFT + 6)
+#define SXT_ENOSUCHCHAN     (SXT_EBASESHIFT + 7)
+#define SXT_ENORPC          (SXT_EBASESHIFT + 8)
+#define SXT_ENOMSG          (SXT_EBASESHIFT + 9)
+#define SXT_EPERM           (SXT_EBASESHIFT + 10)
+#define SXT_EACCES          (SXT_EBASESHIFT + 11)
+#define SXT_ECRYPTO         (SXT_EBASESHIFT + 12)
+#define SXT_EAUTH           (SXT_EBASESHIFT + 13)
+#define SXT_EKEY            (SXT_EBASESHIFT + 14)
+#define SXT_EHASH           (SXT_EBASESHIFT + 15)
+#define SXT_EINVAL          (SXT_EBASESHIFT + 22)
+#define SXT_ENOMEM          (SXT_EBASESHIFT + 42)
 
 #endif /* __SXT_ERRNO_H__ */