diff --git a/treeh.c b/treeh.c
index f8f8d60..32e20fd 100644
--- a/treeh.c
+++ b/treeh.c
@@ -74,7 +74,8 @@ bool addto_tree(tree t,string s){
     addto_tree(t->next[hash(s[0])],s+1,isIn);
 }
 void addto_tree2(tree t,string s){
-  //faster than addto_treeused when it is knowned the word is not yet in dictionnary
+  //faster than addto_tree
+  //used when it is known the word is not yet in dictionnary
   if(s[0]=='\0'){
     t->isEnd=true;
     return;
diff --git a/treeh.h b/treeh.h
index 7c9b0ec..804b1b4 100644
--- a/treeh.h
+++ b/treeh.h
@@ -26,7 +26,8 @@ bool is_end(tree);
 bool is_followed(tree);//tells if tree has following letters
 int hash(char);
 
-void addto_tree(tree,char*,int);
+void addto_tree(tree,string,int);
+void addto_tree2(tree,string);
 void loadfrom_file(tree,FILE*);
 void loadfrom_keyboard(tree);
 
--
libgit2 0.21.2