diff --git a/include/asm-m32r/delay.h b/include/asm-m32r/delay.h
index 164448d..9dd9e99 100644
--- a/include/asm-m32r/delay.h
+++ b/include/asm-m32r/delay.h
@@ -12,7 +12,7 @@
 
 extern void __udelay(unsigned long usecs);
 extern void __ndelay(unsigned long nsecs);
-extern void __const_udelay(unsigned long usecs);
+extern void __const_udelay(unsigned long xloops);
 extern void __delay(unsigned long loops);
 
 #define udelay(n) (__builtin_constant_p(n) ? \