diff --git a/include/r3.h b/include/r3.h
index 8334a49..0851c0d 100644
--- a/include/r3.h
+++ b/include/r3.h
@@ -126,6 +126,10 @@ edge * r3_node_find_common_prefix(node *n, const char *path, int path_len, int *
 
 node * r3_tree_insert_pathl(node *tree, const char *path, int path_len, void * data);
 
+#define r3_tree_insert_pathl(tree, path, path_len, data) r3_tree_insert_pathl_ex(tree, path, path_len, NULL , data, NULL)
+
+
+
 route * r3_tree_insert_routel(node *tree, int method, const char *path, int path_len, void *data);
 
 route * r3_tree_insert_routel_ex(node *tree, int method, const char *path, int path_len, void *data, char **errstr);
@@ -184,6 +188,9 @@ int r3_route_cmp(const route *r1, const match_entry *r2);
 
 route * r3_tree_match_route(const node *n, match_entry * entry);
 
+#define r3_route_create(p) r3_route_createl(p, strlen(p))
+
+
 #define METHOD_GET 2
 #define METHOD_POST 2<<1
 #define METHOD_PUT 2<<2
diff --git a/src/edge.c b/src/edge.c
index ea4371e..269146f 100644
--- a/src/edge.c
+++ b/src/edge.c
@@ -23,8 +23,15 @@
 #include "slug.h"
 #include "zmalloc.h"
 
+
+#define CHECK_PTR(ptr) if (ptr == NULL) return NULL;
+
+
 edge * r3_edge_createl(const char * pattern, int pattern_len, node * child) {
     edge * e = (edge*) zmalloc( sizeof(edge) );
+
+    CHECK_PTR(e);
+
     e->pattern = (char*) pattern;
     e->pattern_len = pattern_len;
     e->opcode = 0;
diff --git a/src/node.c b/src/node.c
index 541667d..17329c4 100644
--- a/src/node.c
+++ b/src/node.c
@@ -450,11 +450,6 @@ node * r3_node_create() {
     return n;
 }
 
-
-route * r3_route_create(const char * path) {
-    return r3_route_createl(path, strlen(path));
-}
-
 void r3_route_free(route * route) {
     zfree(route);
 }
@@ -497,12 +492,6 @@ route * r3_tree_insert_routel_ex(node *tree, int method, const char *path, int p
 
 
 
-node * r3_tree_insert_pathl(node *tree, const char *path, int path_len, void * data)
-{
-    return r3_tree_insert_pathl_ex(tree, path, path_len, NULL , data, NULL);
-}
-
-
 /**
  * Find common prefix from the edges of the node.
  *
diff --git a/tests/check_tree.c b/tests/check_tree.c
index 1d30c62..355f58a 100644
--- a/tests/check_tree.c
+++ b/tests/check_tree.c
@@ -674,7 +674,7 @@ START_TEST(test_insert_route)
     r3_tree_insert_route(n, METHOD_POST, "/blog/post", &var2);
 
     route *c = r3_tree_match_route(n, entry);
-    fail_if(c == NULL);
+    ck_assert(c != NULL);
 
     r3_tree_free(n);
     match_entry_free(entry);