diff --git a/arch/z80/src/z80/up_mem.h b/arch/z80/src/z80/up_mem.h
index 9273d3f89b0..a12b52656b8 100644
--- a/arch/z80/src/z80/up_mem.h
+++ b/arch/z80/src/z80/up_mem.h
@@ -33,8 +33,8 @@
  *
  ************************************************************************************/
 
-#ifndef nuttx.lnk__ARCH_Z80_SRC_COMMON_UP_MEM_H
-#define nuttx.lnk__ARCH_Z80_SRC_COMMON_UP_MEM_H
+#ifndef __ARCH_Z80_SRC_COMMON_UP_MEM_H
+#define __ARCH_Z80_SRC_COMMON_UP_MEM_H
 
 /************************************************************************************
  * Included Files
@@ -72,4 +72,4 @@
 
 extern const uint16_t g_heapbase;
 
-#endif  /* nuttx.lnk__ARCH_Z80_SRC_COMMON_UP_MEM_H */
+#endif  /* __ARCH_Z80_SRC_COMMON_UP_MEM_H */