diff --git a/src/system/kernel/cache/block_cache.cpp b/src/system/kernel/cache/block_cache.cpp
index f7795acd6e..2e4e094ab8 100644
--- a/src/system/kernel/cache/block_cache.cpp
+++ b/src/system/kernel/cache/block_cache.cpp
@@ -2209,6 +2209,7 @@ block_cache_delete(void *_cache, bool allowWrites)
 		delete transaction;
 	}
 
+	locker.Unlock();
 	delete cache;
 }