diff --git a/docs/GarbageCollection.html b/docs/GarbageCollection.html
index c9324859ba9..0e97f0234a5 100644
--- a/docs/GarbageCollection.html
+++ b/docs/GarbageCollection.html
@@ -1094,8 +1094,8 @@ bool MyCollector::performCustomLowering(Function &F) {
   bool MadeChange = false;
   
   for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
-    for (BasicBlock::iterator II = BB->begin(), E = BB->end(); II != E; ++II)
-      if (IntrinsicInst *CI = dyn_cast<IntrinsicInst>(II))
+    for (BasicBlock::iterator II = BB->begin(), E = BB->end(); II != E; )
+      if (IntrinsicInst *CI = dyn_cast<IntrinsicInst>(II++))
         if (Function *F = CI->getCalledFunction())
           switch (F->getIntrinsicID()) {
           case Intrinsic::gcwrite: