diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 4300bb4..b4f5b81 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -224,7 +224,7 @@
 				char *linebuf, size_t linebuflen, bool ascii);
 extern void print_hex_dump(const char *level, const char *prefix_str,
 				int prefix_type, int rowsize, int groupsize,
-				void *buf, size_t len, bool ascii);
+				const void *buf, size_t len, bool ascii);
 extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
 			void *buf, size_t len);
 #define hex_asc(x)	"0123456789abcdef"[x]