diff --git a/libc/decl/errno_values.h b/libc/decl/errno_values.h
index b8b4a38c..442e9076 100644
--- a/libc/decl/errno_values.h
+++ b/libc/decl/errno_values.h
@@ -60,6 +60,7 @@
 #define EADDRNOTAVAIL 68
 #define EISCONN 69
 #define EFAULT 70
+#define EDESTADDRREQ 71
 
 #define EOPNOTSUPP ENOTSUP
 
diff --git a/libc/strerror.cpp b/libc/strerror.cpp
index 84f9e36c..5991873a 100644
--- a/libc/strerror.cpp
+++ b/libc/strerror.cpp
@@ -89,6 +89,7 @@ extern "C" const char* sortix_strerror(int errnum)
 	case EADDRNOTAVAIL: return "Address not available";
 	case EISCONN: return "Socket is connected";
 	case EFAULT: return "Bad address";
+	case EDESTADDRREQ: return "Destinatiohn address required";
 	default: return "Unknown error condition";
 	}
 }