diff --git a/test/TestUtil.cpp b/test/TestUtil.cpp
index b470b8ce8..a8262238f 100644
--- a/test/TestUtil.cpp
+++ b/test/TestUtil.cpp
@@ -4,6 +4,13 @@
 
 #include "TestUtil.h"
 
+#if defined(ARDUINO)
+#include <Arduino.h>
+#else
+#include <chrono>
+#include <thread>
+#endif
+
 void initializeTestEnvironment()
 {
     concurrency::hasBeenSetup = true;
@@ -15,4 +22,13 @@ void initializeTestEnvironment()
     perhapsSetRTC(RTCQualityNTP, &tv);
 #endif
     concurrency::OSThread::setup();
+}
+
+void testDelay(unsigned long ms)
+{
+#if defined(ARDUINO)
+    ::delay(ms);
+#else
+    std::this_thread::sleep_for(std::chrono::milliseconds(ms));
+#endif
 }
\ No newline at end of file
diff --git a/test/TestUtil.h b/test/TestUtil.h
index ce021e459..fb634184b 100644
--- a/test/TestUtil.h
+++ b/test/TestUtil.h
@@ -1,4 +1,7 @@
 #pragma once
 
 // Initialize testing environment.
-void initializeTestEnvironment();
\ No newline at end of file
+void initializeTestEnvironment();
+
+// Portable delay for tests (Arduino or host).
+void testDelay(unsigned long ms);
\ No newline at end of file
diff --git a/test/test_atak/test_main.cpp b/test/test_atak/test_main.cpp
index 2ef59844f..4247f37ac 100644
--- a/test/test_atak/test_main.cpp
+++ b/test/test_atak/test_main.cpp
@@ -1,6 +1,8 @@
 #include <string.h>
 #include <unity.h>
 
+#include "TestUtil.h"
+
 /**
  * Get actual string length for nanopb char array fields.
  * Nanopb stores strings as fixed-size char arrays that may contain embedded nulls.
@@ -202,8 +204,8 @@ void setup()
 {
     // NOTE!!! Wait for >2 secs
     // if board doesn't support software reset via Serial.DTR/RTS
-    delay(10);
-    delay(2000);
+    testDelay(10);
+    testDelay(2000);
 
     UNITY_BEGIN();
     RUN_TEST(test_normal_string);