diff --git a/include/asm-s390/debug.h b/include/asm-s390/debug.h
index 335baf4..9450ce6e 100644
--- a/include/asm-s390/debug.h
+++ b/include/asm-s390/debug.h
@@ -120,10 +120,10 @@
 
 /* Debug Feature API: */
 
-debug_info_t* debug_register(char* name, int pages, int nr_areas,
+debug_info_t *debug_register(const char *name, int pages, int nr_areas,
                              int buf_size);
 
-debug_info_t *debug_register_mode(char *name, int pages, int nr_areas,
+debug_info_t *debug_register_mode(const char *name, int pages, int nr_areas,
 				  int buf_size, mode_t mode, uid_t uid,
 				  gid_t gid);