diff --git a/src/ru/pulsar/jenkins/library/IStepExecutor.groovy b/src/ru/pulsar/jenkins/library/IStepExecutor.groovy
index b8d0c50..8a2f6e8 100644
--- a/src/ru/pulsar/jenkins/library/IStepExecutor.groovy
+++ b/src/ru/pulsar/jenkins/library/IStepExecutor.groovy
@@ -44,7 +44,7 @@ interface IStepExecutor {
 
     def ringCommand(String script)
 
-    void start(String script)
+    void start(String executable, String params)
 
     void tool(String toolName)
 
diff --git a/src/ru/pulsar/jenkins/library/StepExecutor.groovy b/src/ru/pulsar/jenkins/library/StepExecutor.groovy
index 81c29a5..8309af6 100644
--- a/src/ru/pulsar/jenkins/library/StepExecutor.groovy
+++ b/src/ru/pulsar/jenkins/library/StepExecutor.groovy
@@ -76,8 +76,8 @@ class StepExecutor implements IStepExecutor {
     }
 
     @Override
-    void start(String script) {
-        steps.start(script)
+    void start(String executable, String params) {
+        steps.start(executable, params)
     }
 
     @Override
diff --git a/src/ru/pulsar/jenkins/library/steps/Start.groovy b/src/ru/pulsar/jenkins/library/steps/Start.groovy
index 8d8c99e..a3ede2d 100644
--- a/src/ru/pulsar/jenkins/library/steps/Start.groovy
+++ b/src/ru/pulsar/jenkins/library/steps/Start.groovy
@@ -5,20 +5,22 @@ import ru.pulsar.jenkins.library.ioc.ContextRegistry
 
 class Start implements Serializable {
 
-    private String script
+    private String executable
+    private String params
     private String encoding = 'UTF-8'
 
-    Start(String script) {
-        this.script = script
+    Start(String executable, String params) {
+        this.executable = executable
+        this.params = params
     };
 
     void run() {
         IStepExecutor steps = ContextRegistry.getContext().getStepExecutor()
 
         if (steps.isUnix()) {
-            steps.sh("$script &", false, false , encoding)
+            steps.sh("$executable $params &", false, false , encoding)
         } else {
-            steps.bat("chcp 65001 > nul \nstart $script", false, false, encoding)
+            steps.bat("chcp 65001 > nul \nstart \"\" /B \"$executable\" \"$params\"", false, false, encoding)
         }
     }
 }
diff --git a/src/ru/pulsar/jenkins/library/utils/CoverageUtils.groovy b/src/ru/pulsar/jenkins/library/utils/CoverageUtils.groovy
index c23288c..a8a8d78 100644
--- a/src/ru/pulsar/jenkins/library/utils/CoverageUtils.groovy
+++ b/src/ru/pulsar/jenkins/library/utils/CoverageUtils.groovy
@@ -51,8 +51,8 @@ class CoverageUtils {
 
         String dbgsPath = findDbgs(steps, config)
 
-        steps.start("${dbgsPath} --addr=127.0.0.1 --port=${coverageContext.port}")
-        steps.start("${coverageOpts.coverage41CPath} start -i DefAlias -u http://127.0.0.1:${coverageContext.port} -P $workspaceDir -s $srcDir -o ${stage.getCoverageStashPath()}")
+        steps.start(dbgsPath, "--addr=127.0.0.1 --port=${coverageContext.port}")
+        steps.start(coverageOpts.coverage41CPath, "start -i DefAlias -u http://127.0.0.1:${coverageContext.port} -P $workspaceDir -s $srcDir -o ${stage.getCoverageStashPath()}")
         steps.cmd("${coverageOpts.coverage41CPath} check -i DefAlias -u http://127.0.0.1:${coverageContext.port}")
 
         def newDbgsPids = getPIDs("dbgs")
diff --git a/vars/start.groovy b/vars/start.groovy
index 2727ee1..dc10d29 100644
--- a/vars/start.groovy
+++ b/vars/start.groovy
@@ -1,9 +1,9 @@
 import ru.pulsar.jenkins.library.steps.Start
 import ru.pulsar.jenkins.library.ioc.ContextRegistry
 
-void call(String script) {
+void call(String executable, String params) {
     ContextRegistry.registerDefaultContext(this)
 
-    Start start = new Start(script)
+    Start start = new Start(executable, params)
     start.run()
 }