Cadbury is taking a chunk out of its family size chocolate blocks in an effort to ease the pressure of rising costs.
A statement on Cadbury New Zealand's Facebook page said 220 gram blocks would be reduced down to 200 grams.
The changes would also affect the company's products in Australia.
The company said like other confectionary manufacturers around the world, it was feeling the squeeze of increasing costs.
"At Cadbury, we're feeling it too. We've reached a point where we can no longer absorb these increasing costs into the costs of our chocolate blocks."
Cadbury said it had to choose between raising the price of the blocks, or making them smaller and it chose to reduce the size so it could keep the blocks affordable for New Zealand families.
The smaller chocolate blocks are expected to be on sale here in the next few months, the company said.