diff --git a/samples/fitch/languages/jetbrains.mps.logic.firstOrder/models/types.mps b/samples/fitch/languages/jetbrains.mps.logic.firstOrder/models/types.mps
index 40e798d2..343db6b7 100644
--- a/samples/fitch/languages/jetbrains.mps.logic.firstOrder/models/types.mps
+++ b/samples/fitch/languages/jetbrains.mps.logic.firstOrder/models/types.mps
@@ -526,7 +526,7 @@
-
+
@@ -539,8 +539,8 @@
-
-
+
+
@@ -562,10 +562,7 @@
-
-
-
-
+