diff --git a/libc/decl/errno_values.h b/libc/decl/errno_values.h
index 14e0853c..c2ce55f6 100644
--- a/libc/decl/errno_values.h
+++ b/libc/decl/errno_values.h
@@ -44,6 +44,7 @@
 #define ENAMETOOLONG 52
 #define ELOOP 53
 #define EMLINK 54
+#define ENXIO 55
 
 #define EOPNOTSUPP ENOTSUP
 
diff --git a/libc/strerror.cpp b/libc/strerror.cpp
index 45f67e4c..b33967e2 100644
--- a/libc/strerror.cpp
+++ b/libc/strerror.cpp
@@ -73,6 +73,7 @@ extern "C" const char* sortix_strerror(int errnum)
 	case ENAMETOOLONG: return "Filename too long";
 	case ELOOP: return "Too many levels of symbolic links";
 	case EMLINK: return "Too many links";
+	case ENXIO: return "No such device or address";
 	default: return "Unknown error condition";
 	}
 }