diff --git a/lldb/test/API/commands/platform/process/list/TestProcessList.py b/lldb/test/API/commands/platform/process/list/TestProcessList.py
index 5daf5dc49b52a..683b62e56e171 100644
--- a/lldb/test/API/commands/platform/process/list/TestProcessList.py
+++ b/lldb/test/API/commands/platform/process/list/TestProcessList.py
@@ -23,8 +23,10 @@ def test_process_list_with_args(self):
         exe = self.getBuildArtifact("TestProcess")
 
         # Spawn a new process
-        popen = self.spawnSubprocess(exe, args=["arg1", "--arg2", "arg3"])
-
-        substrs = [str(popen.pid), "TestProcess arg1 --arg2 arg3"]
+        sync_file = lldbutil.append_to_process_working_directory(self,
+                "ready.txt")
+        popen = self.spawnSubprocess(exe, args=[sync_file, "arg1", "--arg2", "arg3"])
+        lldbutil.wait_for_file_on_target(self, sync_file)
 
+        substrs = [str(popen.pid), "TestProcess", "arg1 --arg2 arg3"]
         self.expect("platform process list -v", substrs=substrs)
diff --git a/lldb/test/API/commands/platform/process/list/main.cpp b/lldb/test/API/commands/platform/process/list/main.cpp
index da43e60155ea0..955f6e4382d20 100644
--- a/lldb/test/API/commands/platform/process/list/main.cpp
+++ b/lldb/test/API/commands/platform/process/list/main.cpp
@@ -1,9 +1,9 @@
-#include <stdio.h>
-
 #include <chrono>
+#include <fstream>
 #include <thread>
 
 int main(int argc, char const *argv[]) {
+  std::ofstream(argv[1]).close();
   std::this_thread::sleep_for(std::chrono::seconds(30));
   return 0;
 }