1 files changed, 2 insertions, 2 deletions
diff --git a/util.c b/util.c
index 9d9c5d3..5116347 100644
--- a/util.c
+++ b/util.c
@@ -10,14 +10,14 @@
 #include "util.h"
 
 
-char* copy_buf(char *buf,int len){
+char* copy_buf(const char *buf,int len){
 	char *dst=malloc(len+1,char);
 	memcpy(dst,buf,len);
 	dst[len]='\0';
 	return dst;
 }
 
-char* copy_str(char *str){
+char* copy_str(const char *str){
 	return copy_buf(str,strlen(str));
 }