diff --git a/HTMLKit/HTMLNode.m b/HTMLKit/HTMLNode.m
index d4c51aa..6aac8c2 100644
--- a/HTMLKit/HTMLNode.m
+++ b/HTMLKit/HTMLNode.m
@@ -153,7 +153,9 @@
 
 - (HTMLNode *)insertNode:(HTMLNode *)node beforeChildNode:(HTMLNode *)child
 {
+#ifndef HTMLKIT_NO_DOM_CHECKS
 	[self ensurePreInsertionValidityOfNode:node beforeChildNode:child];
+#endif
 
 	[self.ownerDocument adoptNode:node];
 
@@ -178,7 +180,9 @@
 
 - (HTMLNode *)replaceChildNode:(HTMLNode *)child withNode:(HTMLNode *)node
 {
+#ifndef HTMLKIT_NO_DOM_CHECKS
 	[self ensureReplacementValidityOfChildNode:child withNode:node];
+#endif
 
 	[self insertNode:node beforeChildNode:child];
 	[child removeFromParentNode];
@@ -269,6 +273,7 @@
 	}
 }
 
+#ifndef HTMLKIT_NO_DOM_CHECKS
 
 #pragma mark - Validity Checks
 
@@ -431,6 +436,8 @@ NS_INLINE void CheckInvalidCombination(HTMLNode *parent, HTMLNode *node, NSStrin
 	}
 }
 
+#endif
+
 #pragma mark - NSCopying
 
 - (id)copyWithZone:(NSZone *)zone