diff --git a/src/main/java/org/openjump/advancedtools/block/DrawBlockTool.java b/src/main/java/org/openjump/advancedtools/block/DrawBlockTool.java
index 65be552..26e1cf4 100644
--- a/src/main/java/org/openjump/advancedtools/block/DrawBlockTool.java
+++ b/src/main/java/org/openjump/advancedtools/block/DrawBlockTool.java
@@ -11,6 +11,7 @@
 
 import com.vividsolutions.jump.I18N;
 import com.vividsolutions.jump.workbench.JUMPWorkbench;
+import com.vividsolutions.jump.workbench.model.UndoableCommand;
 
 import org.locationtech.jts.geom.Coordinate;
 import org.locationtech.jts.geom.Geometry;
@@ -85,9 +86,13 @@ protected void gestureFinished() throws Exception {
         GeometryUtils.scaleGeometry(geom2, dimension);
         GeometryUtils.centerGeometry(geom2, displacement);
 
-        execute(featureDrawingUtil.createAddCommand(geom2,
-                isRollingBackInvalidEdits(), getPanel(), this));
+        // TODO: [202208 ed] lots a symbols seem to not pass geom.isValid() anymore
+        //       disabled the check, but am not sure this is the proper solution
+        UndoableCommand cmd = featureDrawingUtil.createAddCommand(geom2,
+            /*isRollingBackInvalidEdits()*/false, getPanel(), this);
 
+        if (cmd!=null)
+          execute(cmd);
     }
 
     @Override