diff --git a/include/r3.h b/include/r3.h
index 5d04acf..f8dc0b4 100644
--- a/include/r3.h
+++ b/include/r3.h
@@ -126,7 +126,7 @@ int r3_tree_compile(node *n, char** errstr);
 
 int r3_tree_compile_patterns(node * n, char** errstr);
 
-node * r3_tree_matchl(const node * n, const char * path, int path_len, const match_entry * entry);
+node * r3_tree_matchl(const node * n, const char * path, int path_len, match_entry * entry);
 
 #define r3_tree_match(n,p,e)  r3_tree_matchl(n,p, strlen(p), e)
 
@@ -155,7 +155,7 @@ void r3_node_append_route(node * n, route * route);
 
 void r3_route_free(route * route);
 
-route * r3_tree_match_route(const node *n, const match_entry * entry);
+route * r3_tree_match_route(const node *n, match_entry * entry);
 
 #define METHOD_GET 2
 #define METHOD_POST 2<<1
diff --git a/src/node.c b/src/node.c
index cec0fa2..297251b 100644
--- a/src/node.c
+++ b/src/node.c
@@ -253,7 +253,7 @@ int r3_tree_compile_patterns(node * n, char **errstr) {
  * @param int          path_len the length of the URL path.
  * @param match_entry* entry match_entry is used for saving the captured dynamic strings from pcre result.
  */
-node * r3_tree_matchl(const node * n, const char * path, int path_len, const match_entry * entry) {
+node * r3_tree_matchl(const node * n, const char * path, int path_len, match_entry * entry) {
     info("try matching: %s\n", path);
 
     edge *e;
@@ -376,7 +376,7 @@ node * r3_tree_matchl(const node * n, const char * path, int path_len, const mat
 
 
 
-route * r3_tree_match_route(const node *tree, const match_entry * entry) {
+route * r3_tree_match_route(const node *tree, match_entry * entry) {
     node *n;
     n = r3_tree_match_entry(tree, entry);
     if (n && n->routes && n->route_len > 0) {