diff --git a/include/asm-avr32/string.h b/include/asm-avr32/string.h
index 8b05d1a..58582a3 100644
--- a/include/asm-avr32/string.h
+++ b/include/asm-avr32/string.h
@@ -23,6 +23,6 @@
 #define __ASM_AVR32_STRING_H
 
 #define __HAVE_ARCH_MEMSET
-extern void *memset(void *s, int c, size_t n);
+extern void *memset(void *s, int c, __kernel_size_t n);
 
 #endif /* __ASM_AVR32_STRING_H */