diff --git a/kernel/globals.h b/kernel/globals.h
index 6087deb..5e1683e 100644
--- a/kernel/globals.h
+++ b/kernel/globals.h
@@ -423,7 +423,7 @@ void ASMCFUNC spawn_int23(void);        /* procsupt.asm */
 void ASMCFUNC DosIdle_hlt(void);        /* dosidle.asm */
 
 GLOBAL BYTE ReturnAnyDosVersionExpected;
-GLOBAL BYTE HaltCpuWhileIdle;
+GLOBAL BYTE ASM HaltCpuWhileIdle;
 
 GLOBAL struct f_node fnode[2];
 GLOBAL int fnode_fd[2];
diff --git a/kernel/init-mod.h b/kernel/init-mod.h
index e97c0f0..8a861f4 100644
--- a/kernel/init-mod.h
+++ b/kernel/init-mod.h
@@ -261,7 +261,7 @@ extern BYTE DOSFAR ASM _HMATextAvailable,    /* first byte of available CODE are
   FAR ASM _HMATextEnd[], DOSFAR ASM break_ena;  /* break enabled flag                   */
 extern BYTE DOSFAR _InitTextStart,       /* first available byte of ram          */
   DOSFAR ReturnAnyDosVersionExpected,
-  DOSFAR HaltCpuWhileIdle;
+  DOSFAR ASM HaltCpuWhileIdle;
 
 extern BYTE FAR ASM internal_data[];
 extern unsigned char FAR ASM kbdType;