diff --git a/snippets/c-mode/oncekl b/snippets/c-mode/oncekl
new file mode 100644
index 0000000..d0f8afc
--- /dev/null
+++ b/snippets/c-mode/oncekl
@@ -0,0 +1,9 @@
+#name : #ifndef XXX; #define XXX; #endif
+# key: oncekl
+# --
+#ifndef ${1:`(upcase (file-name-nondirectory (file-name-sans-extension (or (buffer-file-name) ""))))`_H_}
+#define $1
+
+$0
+
+#endif /* $1 */
\ No newline at end of file