diff --git a/grpc/tasks.py b/grpc/tasks.py
index a6496fd..4e8fccc 100644
--- a/grpc/tasks.py
+++ b/grpc/tasks.py
@@ -1,6 +1,7 @@
-from invoke import task
 from pathlib import Path
 
+from invoke import task
+
 ROOT = Path(__file__).parent
 PB_ROOT = ROOT / "pb"
 
@@ -27,13 +28,14 @@ def gen(c, target="types"):
     """
     Generate gRPC client code.
     """
-    outDir = "gen/types"
+    outDir = "gen/" + target
     paths = Path(PB_ROOT).glob('**/*.proto')
     for path in paths:
         # because path is object not string
         pathStr = str(path)
-        print("Generating f or", pathStr)
+        print("Generating for", pathStr)
+        cmd = Path(c.run("npm bin").stdout.rstrip()).joinpath("proto-loader-gen-types")
         c.run(
-            "npx proto-loader-gen-types --includeComments --grpcLib @grpc/grpc-js -I pb -O {} {}"
-                .format(outDir, pathStr)
+            "{} --includeComments --grpcLib @grpc/grpc-js -I pb -O {} {}"
+                .format(cmd, outDir, pathStr)
         )