diff --git a/include/asm-i386/timex.h b/include/asm-i386/timex.h
index e370f90..292b5a6 100644
--- a/include/asm-i386/timex.h
+++ b/include/asm-i386/timex.h
@@ -47,7 +47,7 @@
 	return ret;
 }
 
-extern unsigned long cpu_khz;
+extern unsigned int cpu_khz;
 
 extern int read_current_timer(unsigned long *timer_value);
 #define ARCH_HAS_READ_CURRENT_TIMER	1