diff --git a/src/malli/generator.cljc b/src/malli/generator.cljc
index 8d0365119..543b723b0 100644
--- a/src/malli/generator.cljc
+++ b/src/malli/generator.cljc
@@ -223,31 +223,27 @@
       (-never-gen options))))
 
 (comment
+  ;; unsatisfiable
   (do (sample [:and :int [:>= 1.5] [:<= 1.5]] {:size 1000})
       nil)
-  (do (sample [:and :int [:>= 1] [:<= 1]] {:size 1000})
-      nil)
-  (do (sample [:and :int [:>= 1] [:<= 1]] {:size 1000})
-      nil)
+  (assert (= #{1} (set (sample [:and :int [:>= 1] [:<= 1]] {:size 1000}))))
   ;;FIXME never generates 2
   (do (sample [:and :int [:or
                           [:and [:>= 1] [:<= 1]]
                           [:and [:>= 2] [:<= 2]]]] {:size 10})
       nil)
-  (do (distinct (sample [:and :int [:or
-                                    [:and [:>= 2] [:<= 2]]
-                                    [:and [:>= 1] [:<= 1]]]] {:size 100000}))
-      nil)
-  (do (= #{2 3} (set (distinct (sample [:and :int [:>= 2] [:and [:or [:<= 3] [:<= 2]]]] {:size 100000}))))
-      nil)
-  (do (distinct (sample [:or
-                         [:and [:>= 2] [:<= 2]]
-                         [:and [:>= 1] [:<= 1]]] {:size 100000}))
-      nil)
-  (do (distinct (sample [:and [:>= 2] [:<= 2]] {:size 100000}))
-      nil)
-  (do (distinct (sample [:and [:> 2] [:< 3]] {:size 100000}))
+  ;;FIXME never generates 1
+  (do (set (sample [:and :int [:or
+                               [:and [:>= 2] [:<= 2]]
+                               [:and [:>= 1] [:<= 1]]]] {:size 100000}))
       nil)
+  (assert (= #{2 3} (set (distinct (sample [:and :int [:>= 2] [:and [:or [:<= 3] [:<= 2]]]] {:size 100000})))))
+  (assert (= #{2 2.0 1 1.0})
+          (set (sample [:or
+                        [:and [:>= 2] [:<= 2]]
+                        [:and [:>= 1] [:<= 1]]] {:size 100000})))
+  (assert (= #{2 2.0} (set (sample [:and [:>= 2] [:<= 2]] {:size 100000}))))
+  (assert (every? #(< 2 % 3) (sample [:and [:> 2] [:< 3]] {:size 100000})))
   )
 
 (defn- gen-one-of [gs]