diff --git a/src/network/mcpe/convert/RuntimeBlockMapping.php b/src/network/mcpe/convert/RuntimeBlockMapping.php
index e0acc2430..c5945e28d 100644
--- a/src/network/mcpe/convert/RuntimeBlockMapping.php
+++ b/src/network/mcpe/convert/RuntimeBlockMapping.php
@@ -66,8 +66,11 @@ final class RuntimeBlockMapping{
 		private BlockStateDictionary $blockStateDictionary,
 		private BlockStateSerializer $blockStateSerializer
 	){
-		$this->fallbackStateData = new BlockStateData(BlockTypeNames::INFO_UPDATE, [], BlockStateData::CURRENT_VERSION);
-		$this->fallbackStateId = $this->blockStateDictionary->lookupStateIdFromData($this->fallbackStateData) ?? throw new AssumptionFailedError(BlockTypeNames::INFO_UPDATE . " should always exist");
+		$this->fallbackStateId = $this->blockStateDictionary->lookupStateIdFromData(
+				new BlockStateData(BlockTypeNames::INFO_UPDATE, [], BlockStateData::CURRENT_VERSION)
+			) ?? throw new AssumptionFailedError(BlockTypeNames::INFO_UPDATE . " should always exist");
+		//lookup the state data from the dictionary to avoid keeping two copies of the same data around
+		$this->fallbackStateData = $this->blockStateDictionary->getDataFromStateId($this->fallbackStateId) ?? throw new AssumptionFailedError("We just looked up this state data, so it must exist");
 	}
 
 	public function toRuntimeId(int $internalStateId) : int{