diff --git a/test-resources/lib_tests/babashka/run_all_libtests.clj b/test-resources/lib_tests/babashka/run_all_libtests.clj
index 58cc0ba8..86fd4991 100644
--- a/test-resources/lib_tests/babashka/run_all_libtests.clj
+++ b/test-resources/lib_tests/babashka/run_all_libtests.clj
@@ -1,7 +1,7 @@
 (ns babashka.run-all-libtests
-  (:require [clojure.java.io :as io]
-            [clojure.string :as str]
+  (:require [babashka.core :refer [windows?]]
             [clojure.edn :as edn]
+            [clojure.java.io :as io]
             [clojure.test :as t]))
 
 (def ns-args (set (map symbol *command-line-args*)))
@@ -21,14 +21,10 @@
         (swap! status (fn [status]
                         (merge-with + status (dissoc m :type))))))))
 
-(def windows? (-> (System/getProperty "os.name")
-                (str/lower-case)
-                (str/includes? "win")))
-
 ;; Standard test-runner for libtests
 (let [lib-tests (edn/read-string (slurp (io/resource "bb-tested-libs.edn")))]
   (doseq [{tns :test-namespaces skip-windows :skip-windows} (vals lib-tests)]
-    (when-not (and skip-windows windows?)
+    (when-not (and skip-windows (windows?))
       (apply test-namespaces tns))))
 
 ;; Non-standard tests - These are tests with unusual setup around test-namespaces
@@ -44,7 +40,7 @@
   (test-doric-cyclic-dep-problem))
 
 ;;;; babashka.process
-(when-not windows?
+(when-not (windows?)
   ;; test built-in babashka.process
   (test-namespaces 'babashka.process-test)
 
diff --git a/test-resources/lib_tests/missing/test/old_methods.cljc b/test-resources/lib_tests/missing/test/old_methods.cljc
index 4ef98a0d..dff312a8 100644
--- a/test-resources/lib_tests/missing/test/old_methods.cljc
+++ b/test-resources/lib_tests/missing/test/old_methods.cljc
@@ -4,10 +4,12 @@
 
 (defmethod t/report #?(:clj :begin-test-var
                        :cljs [::t/default :begin-test-var]) [_]
-  (println "Begin test var."))
+  ;; BB-TEST-PATCH: remove message to not disturb test output for other libs
+  #_(println "Begin test var."))
 
 (defmethod t/report #?(:clj :end-test-var
                        :cljs [::t/default :end-test-var]) [_]
-  (println "End test var."))
+  ;; BB-TEST-PATCH: remove message to not disturb test output for other libs
+  #_(println "End test var."))
 
 (register! {:throw? false})