diff --git a/exercises/04/vslc/include/ir.h b/exercises/04/vslc/include/ir.h
index 0ba03a2..62d9add 100644
--- a/exercises/04/vslc/include/ir.h
+++ b/exercises/04/vslc/include/ir.h
@@ -49,7 +49,3 @@ typedef struct s {
 
 #define DEFAULT_STRING_LIST_SIZE    8
 #define DEFAULT_NO_SCOPES           1
-
-/* Helper functions */
-void print_global_tree(symbol_t* global);
-void insert_symbol(tlhash_t *hash_table, symbol_t* symbol);
\ No newline at end of file