diff --git a/tests/zero_cross_detection/test_zero_cross_detection.cpp b/tests/zero_cross_detection/test_zero_cross_detection.cpp
index 5b4846a..197d336 100644
--- a/tests/zero_cross_detection/test_zero_cross_detection.cpp
+++ b/tests/zero_cross_detection/test_zero_cross_detection.cpp
@@ -67,6 +67,33 @@ TEST(test_zero_cross_detection, ZCD_IsTriggerdTrueWhenRising)
     CHECK_TRUE(ZCD_IsTriggered()); 
 }
 
+static void PollIterationExpectations(void)
+{
+    mock().expectOneCall("ADC_Init")
+        .withUnsignedIntParameter("pin_num", 7);
+
+    mock().expectOneCall("ADC_Enable")
+        .withUnsignedIntParameter("pin_num", 7);
+
+    mock().expectOneCall("ADC_ReadValue_Impl")
+        .withUnsignedIntParameter("pin_num", 7)
+        .ignoreOtherParameters();
+
+    mock().expectOneCall("ADC_Disable");
+
+    mock().expectOneCall("ADC_Init")
+        .withUnsignedIntParameter("pin_num", 7);
+
+    mock().expectOneCall("ADC_Enable")
+        .withUnsignedIntParameter("pin_num", 7);
+
+    mock().expectOneCall("ADC_ReadValue_Impl")
+        .withUnsignedIntParameter("pin_num", 7)
+        .ignoreOtherParameters();
+
+    mock().expectOneCall("ADC_Disable");
+}
+
 
 TEST(test_zero_cross_detection, ZCD_PollWorksAfterCalls)
 {
@@ -77,9 +104,8 @@ TEST(test_zero_cross_detection, ZCD_PollWorksAfterCalls)
     MockADC_PushValue(50);
     MockADC_PushValue(50);
 
-    mock().expectNCalls(4, "ADC_ReadValue_Impl")
-        .withUnsignedIntParameter("pin_num", 7)
-        .ignoreOtherParameters();
+    PollIterationExpectations();
+    PollIterationExpectations();
 
     ZCD_Poll();
 }