diff --git a/LibNoDaveConnectionLibrary/DataTypes/Blocks/ProjectBlockInfo.cs b/LibNoDaveConnectionLibrary/DataTypes/Blocks/ProjectBlockInfo.cs
index cc2f261b..3dc54624 100644
--- a/LibNoDaveConnectionLibrary/DataTypes/Blocks/ProjectBlockInfo.cs
+++ b/LibNoDaveConnectionLibrary/DataTypes/Blocks/ProjectBlockInfo.cs
@@ -30,6 +30,15 @@ public virtual Block GetBlock()
            return blkFld.GetBlock(this);
        }
 
+        /// <summary>
+        /// Drops the converted block cached on this block info, so it can be garbage collected.
+        /// Other blocks stay cached, so blocks referenced by many others (UDTs, FBs) are not converted again.
+        /// </summary>
+        public void ClearCachedBlock()
+        {
+            _Block = null;
+        }
+
         public virtual string GetSourceBlock(bool useSymbols = true)
         {
             if (ParentFolder is BlocksOfflineFolder)