diff --git a/tests/ADC/test_ADC.cpp b/tests/ADC/test_ADC.cpp
index cee3d26..c077306 100644
--- a/tests/ADC/test_ADC.cpp
+++ b/tests/ADC/test_ADC.cpp
@@ -73,6 +73,9 @@ TEST(test_ADC, ADC_InitPortAPin7UsesCorrectRegisters)
 
 TEST(test_ADC, ADC_InitPortAPin0UsesCorrectRegisters)
 {
+
+    ADCStoresPortState();
+
     //Check for setting the direction to input.
     mock().expectOneCall("RegEdit_SetBit")
         .withPointerParameter("reg", (void *) &PORTA.DIRCLR)