diff --git a/py/misc.h b/py/misc.h
index 2f53dcb..c0fd293 100644
--- a/py/misc.h
+++ b/py/misc.h
@@ -23,12 +23,11 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+#ifndef __MICROPY_INCLUDED_PY_MISC_H__
+#define __MICROPY_INCLUDED_PY_MISC_H__
 
 // a mini library of useful types and functions
 
-#ifndef _INCLUDED_MINILIB_H
-#define _INCLUDED_MINILIB_H
-
 /** types *******************************************************/
 
 #include <stdbool.h>
@@ -185,4 +184,4 @@
 }
 #endif
 
-#endif // _INCLUDED_MINILIB_H
+#endif // __MICROPY_INCLUDED_PY_MISC_H__