diff --git a/libc/decl/errno_values.h b/libc/decl/errno_values.h
index 3e6a41e1..5537bf60 100644
--- a/libc/decl/errno_values.h
+++ b/libc/decl/errno_values.h
@@ -65,6 +65,7 @@
 #define EMSGSIZE 73
 #define ENETDOWN 74
 #define ENETRESET 75
+#define ENETUNREACH 76
 
 #define EOPNOTSUPP ENOTSUP
 
diff --git a/libc/strerror.cpp b/libc/strerror.cpp
index e2745967..38ba5953 100644
--- a/libc/strerror.cpp
+++ b/libc/strerror.cpp
@@ -94,6 +94,7 @@ extern "C" const char* sortix_strerror(int errnum)
 	case EMSGSIZE: return "Message too long";
 	case ENETDOWN: return "Network is down";
 	case ENETRESET: return "Connection aborted by network";
+	case ENETUNREACH: return "Network is unreachable";
 	default: return "Unknown error condition";
 	}
 }