diff --git a/src/network/mcpe/convert/BlockStateLookupCache.php b/src/network/mcpe/convert/BlockStateLookupCache.php
index cea2c9c57..3cc3708ee 100644
--- a/src/network/mcpe/convert/BlockStateLookupCache.php
+++ b/src/network/mcpe/convert/BlockStateLookupCache.php
@@ -58,6 +58,7 @@ final class BlockStateLookupCache{
 		foreach(Utils::stringifyKeys($this->nameToNetworkIdsLookup) as $name => $stateIds){
 			if(count($stateIds) === 1){
 				$this->nameToSingleNetworkIdLookup[$name] = $stateIds[array_key_first($stateIds)];
+				unset($this->nameToNetworkIdsLookup[$name]);
 			}
 		}
 	}