diff --git a/buildSrc/src/main/java/dx/DexMerger.java b/buildSrc/src/main/java/dx/DexMerger.java
index 39a4bfb..d3d8427 100644
--- a/buildSrc/src/main/java/dx/DexMerger.java
+++ b/buildSrc/src/main/java/dx/DexMerger.java
@@ -53,7 +53,7 @@
       public void execute(ExecSpec execSpec) {
         try {
           if (dexMergerExecutable == null) {
-            dexMergerExecutable = new File("tools/" + Utils.toolsDir() + "/dx/bin/dexmerger");
+            dexMergerExecutable = Utils.dexMergerExecutable();
           }
           execSpec.setExecutable(dexMergerExecutable);
           execSpec.args(destination.getCanonicalPath());
diff --git a/buildSrc/src/main/java/utils/Utils.java b/buildSrc/src/main/java/utils/Utils.java
index 4cbc90c..7158e80 100644
--- a/buildSrc/src/main/java/utils/Utils.java
+++ b/buildSrc/src/main/java/utils/Utils.java
@@ -3,6 +3,8 @@
 // BSD-style license that can be found in the LICENSE file.
 package utils;
 
+import java.io.File;
+
 public class Utils {
   public static String toolsDir() {
     String osName = System.getProperty("os.name");
@@ -14,4 +16,9 @@
       return "linux";
     }
   }
-}
+
+  public static File dexMergerExecutable() {
+    String executableName = Utils.toolsDir().equals("windows") ? "dexmerger.bat" : "dexmerger";
+    return new File("tools/" + Utils.toolsDir() + "/dx/bin/" + executableName);
+  }
+}
\ No newline at end of file