diff --git a/libc/include/errno.h b/libc/include/errno.h
index 0d1c71e4..4b61dc1a 100644
--- a/libc/include/errno.h
+++ b/libc/include/errno.h
@@ -13,6 +13,7 @@
 #define EEXISTS 9
 #define ENOTEMPTY 10
 #define ENAMETOOLONG 11
+#define ENOBUFS 12
 
 __BEGIN_DECLS
 
diff --git a/libc/string/strerror.cpp b/libc/string/strerror.cpp
index bb6cc453..0d8a9c0f 100644
--- a/libc/string/strerror.cpp
+++ b/libc/string/strerror.cpp
@@ -43,6 +43,9 @@ char* strerror(int error)
 	case ENAMETOOLONG:
 		strcpy(buffer, "Filename too long");
 		break;
+	case ENOBUFS:
+		strcpy(buffer, "No buffer space available");
+		break;
 	default:
 		{
 			// FIXME: sprintf