fix arguments
diff --git a/buildkite/pipelines/bazel-postsubmit.json b/buildkite/pipelines/bazel-postsubmit.json
index 19ca940..a1a7e6b 100644
--- a/buildkite/pipelines/bazel-postsubmit.json
+++ b/buildkite/pipelines/bazel-postsubmit.json
@@ -7,7 +7,11 @@
         "rm -f WORKSPACE.bak"
       ],
       "build_targets": ["//src:bazel"],
-      "test_targets": ["//scripts/... //src/test/... //third_party/ijar/... //tools/android/..."]
+      "test_targets": [
+        "//scripts/...",
+	"//src/test/...",
+	"//third_party/ijar/...",
+	"//tools/android/..."]
     },
     "ubuntu1604": {
       "shell_commands": [
@@ -15,7 +19,11 @@
         "rm -f WORKSPACE.bak"
       ],
       "build_targets": ["//src:bazel"],
-      "test_targets": ["//scripts/... //src/test/... //third_party/ijar/... //tools/android/..."]
+      "test_targets": [
+        "//scripts/...",
+	"//src/test/...",
+	"//third_party/ijar/...",
+	"//tools/android/..."]
     },
     "macos": {
       "shell_commands": [
@@ -23,7 +31,11 @@
         "rm -f WORKSPACE.bak"
       ],
       "build_targets": ["//src:bazel"],
-      "test_targets": ["//scripts/... //src/test/... //third_party/ijar/... //tools/android/..."]
+      "test_targets": [
+        "//scripts/...",
+	"//src/test/...",
+	"//third_party/ijar/...",
+	"//tools/android/..."]
     }
   }
 }
diff --git a/buildkite/pipelines/bazelci.py b/buildkite/pipelines/bazelci.py
index 0feeae1..97ef0c4 100644
--- a/buildkite/pipelines/bazelci.py
+++ b/buildkite/pipelines/bazelci.py
@@ -14,7 +14,7 @@
 
 def supported_platforms():
     return {
-        "ubuntu1404" : "Ubuntu 14.04", 
+        "ubuntu1404" : "Ubuntu 14.04",
         "ubuntu1604" : "Ubuntu 16.04",
         "macos" : "macOS"
     }
@@ -125,7 +125,7 @@
 
 def run_command(args, shell=False):
     print(" ".join(args))
-    res = subprocess.run(args, shell)
+    res = subprocess.run(args, shell=shell)
     if res.returncode != 0:
         exit(res.returncode)