diff --git a/dnssec_verify.c b/dnssec_verify.c
index 91e9d65e..d76f32eb 100644
--- a/dnssec_verify.c
+++ b/dnssec_verify.c
@@ -21,7 +21,7 @@ ldns_dnssec_data_chain_new(void)
 	ldns_dnssec_data_chain *nc = LDNS_CALLOC(ldns_dnssec_data_chain, 1);
         if(!nc) return NULL;
 	/* 
-	 * not needed anymore because CALLOC initalizes everything to zero.
+	 * not needed anymore because CALLOC initializes everything to zero.
 
 	nc->rrset = NULL;
 	nc->parent_type = 0;
diff --git a/dnssec_zone.c b/dnssec_zone.c
index 7a6764d7..8d625542 100644
--- a/dnssec_zone.c
+++ b/dnssec_zone.c
@@ -323,7 +323,7 @@ ldns_dnssec_name_new(void)
 		return NULL;
 	}
 	/*
-	 * not needed anymore because CALLOC initalizes everything to zero.
+	 * not needed anymore because CALLOC initializes everything to zero.
 
 	new_name->name = NULL;
 	new_name->rrsets = NULL;
diff --git a/rbtree.c b/rbtree.c
index 01ae9c70..d43081a1 100644
--- a/rbtree.c
+++ b/rbtree.c
@@ -71,7 +71,7 @@ static void ldns_rbtree_insert_fixup(ldns_rbtree_t *rbtree, ldns_rbnode_t *node)
 static void ldns_rbtree_delete_fixup(ldns_rbtree_t* rbtree, ldns_rbnode_t* child, ldns_rbnode_t* child_parent);
 
 /*
- * Creates a new red black tree, intializes and returns a pointer to it.
+ * Creates a new red black tree, initializes and returns a pointer to it.
  *
  * Return NULL on failure.
  *