diff --git a/betterproto/plugin.bat b/betterproto/plugin.bat
new file mode 100644
index 000000000..9b837d7dc
--- /dev/null
+++ b/betterproto/plugin.bat
@@ -0,0 +1,2 @@
+@SET plugin_dir=%~dp0
+@python %plugin_dir%/plugin.py %*
\ No newline at end of file
diff --git a/betterproto/tests/generate.py b/betterproto/tests/generate.py
index 987f2d9b3..e0fe631e6 100644
--- a/betterproto/tests/generate.py
+++ b/betterproto/tests/generate.py
@@ -48,13 +48,19 @@ def ensure_ext(filename: str, ext: str) -> str:
         proto_files = get_files(".proto")
         json_files = get_files(".json")
 
+    if os.name == 'nt':
+        plugin_path = os.path.join('..', 'plugin.bat')
+    else:
+        plugin_path = os.path.join('..', 'plugin.py')
+    
+
     for filename in proto_files:
         print(f"Generating code for {os.path.basename(filename)}")
         subprocess.run(
             f"protoc --python_out=. {os.path.basename(filename)}", shell=True
         )
         subprocess.run(
-            f"protoc --plugin=protoc-gen-custom=../plugin.py --custom_out=. {os.path.basename(filename)}",
+            f"protoc --plugin=protoc-gen-custom={plugin_path} --custom_out=. {os.path.basename(filename)}",
             shell=True,
         )