diff --git a/notebooks/tests/chr_tests.ipynb b/notebooks/tests/chr_tests.ipynb
index d13d768d22a62cad9d49508979b932a47849f799..1fa46fbdcc27ef1bb15efce19ba64fc784fd9fa9 100644
--- a/notebooks/tests/chr_tests.ipynb
+++ b/notebooks/tests/chr_tests.ipynb
@@ -80,7 +80,7 @@
     }
    ],
    "source": [
-    "x>y & y>x"
+    "x : INTEGER & x>y & y>x"
    ]
   },
   {
@@ -125,7 +125,7 @@
     }
    ],
    "source": [
-    "x>y & y>x"
+    "x : INTEGER & x>y & y>x"
    ]
   }
  ],