diff --git a/redisson/src/test/java/org/redisson/ClusterRunner.java b/redisson/src/test/java/org/redisson/ClusterRunner.java
index abca5b170..c02d58ea8 100644
--- a/redisson/src/test/java/org/redisson/ClusterRunner.java
+++ b/redisson/src/test/java/org/redisson/ClusterRunner.java
@@ -50,7 +50,7 @@ public class ClusterRunner {
         ArrayList<RedisRunner.RedisProcess> processes = new ArrayList<>();
         for (RedisRunner runner : nodes.keySet()) {
             List<String> options = getClusterConfig(runner);
-            String confFile = runner.dir() + File.separatorChar + nodes.get(runner) + ".conf";
+            String confFile = runner.dir() + File.separator + nodes.get(runner) + ".conf";
             System.out.println("WRITING CONFIG: for " + nodes.get(runner));
             try (PrintWriter printer = new PrintWriter(new FileWriter(confFile))) {
                 options.stream().forEach((line) -> {
diff --git a/redisson/src/test/java/org/redisson/RedisRunner.java b/redisson/src/test/java/org/redisson/RedisRunner.java
index 5499bd5ad..1571057e2 100644
--- a/redisson/src/test/java/org/redisson/RedisRunner.java
+++ b/redisson/src/test/java/org/redisson/RedisRunner.java
@@ -272,7 +272,7 @@ public class RedisRunner {
     public RedisProcess runAndCheck() throws IOException, InterruptedException, FailedToStartRedisException {
         List<String> args = new ArrayList(options.values());
         if (sentinelFile != null && sentinelFile.length() > 0) {
-            String confFile = defaultDir + File.pathSeparator + sentinelFile;
+            String confFile = defaultDir + File.separator + sentinelFile;
             try (PrintWriter printer = new PrintWriter(new FileWriter(confFile))) {
                 args.stream().forEach((arg) -> {
                     if (arg.contains("--")) {
@@ -845,7 +845,7 @@ public class RedisRunner {
     }
 
     public boolean deleteSentinelFile() {
-        File f = new File(defaultDir + File.pathSeparator + sentinelFile);
+        File f = new File(defaultDir + File.separator + sentinelFile);
         if (f.exists()) {
             System.out.println("REDIS RUNNER: Deleting sentinel config file " + f.getAbsolutePath());
             return f.delete();
@@ -863,7 +863,7 @@ public class RedisRunner {
     }
 
     private void makeRandomDefaultDir() {
-        File f = new File(RedissonRuntimeEnvironment.tempDir + File.pathSeparator + UUID.randomUUID());
+        File f = new File(RedissonRuntimeEnvironment.tempDir + File.separator + UUID.randomUUID());
         if (f.exists()) {
             makeRandomDefaultDir();
         } else {