diff --git a/src/ADC/ADC.c b/src/ADC/ADC.c
index e0f558c..0893392 100644
--- a/src/ADC/ADC.c
+++ b/src/ADC/ADC.c
@@ -77,7 +77,7 @@ void ADC_Init(uint8_t adc_chan) {
 
 void ADC_Enable(void) {
   // Set the enable bit in the CTRLA register
-  // RegEdit_SetBit((void *)&ADC0.CTRLA, 0);
+  RegEdit_SetBit((void *)&ADCSRA, ADEN);
 }
 
 void ADC_Disable() {
diff --git a/tests/ADC/test_ADC.cpp b/tests/ADC/test_ADC.cpp
index 69ddd19..2308ed3 100644
--- a/tests/ADC/test_ADC.cpp
+++ b/tests/ADC/test_ADC.cpp
@@ -119,46 +119,18 @@ TEST(test_ADC, ADC_InitPortbWorksWithValidChannels)
     }
 }
 
-TEST(test_ADC, ADC_InitPortAPin0UsesCorrectRegisters)
-{
-    /*
-    //Check for setting the direction to input.
-    mock().expectOneCall("RegEdit_ClearBit")
-        .withPointerParameter("reg", (void *) &PORTA.DIR)
-        .withUnsignedIntParameter("bit_num", 0);
- 
-    //Check that the pullup is off 
-    mock().expectOneCall("RegEdit_ClearBit")
-        .withPointerParameter("reg", (void *) &PORTA.OUT)
-        .withUnsignedIntParameter("bit_num", 0);
-
-    //Set the ISC(input sense config) to disable digital input
-    //buffering and reduce the noise on ADC usage.
-    mock().expectOneCall("RegEdit_SetBit")
-        .withPointerParameter("reg", (void *) &PORTA.PIN0CTRL)
-        .withUnsignedIntParameter("bit_num", PORT_ISC_INPUT_DISABLE_gc);
-
-    */
-    //ADC_Init(0);
-}
-
-TEST(test_ADC, ADC_InitDoesNothingOnHighPinNumbers)
-{
-    //mock().expectNoCall("RegEdit_SetBit");
-    //ADC_Init(8);
-}
 
 TEST(test_ADC, ADC_EnablePasses)
 {
-    /*
-    mock().expectOneCall("RegEdit_SetBit")
-        .withPointerParameter("reg", (void *) &ADC0.CTRLA)
-        .withUnsignedIntParameter("bit_num", 0);
 
-    */
-    //ADC_Enable();
+    mock().expectOneCall("RegEdit_SetBit")
+        .withPointerParameter("reg", (void *) &ADCSRA)
+       .withUnsignedIntParameter("bit_num", ADEN); 
+
+    ADC_Enable();
 }
 
+
 TEST(test_ADC, ADC_DisablePasses)
 {
     /*
@@ -169,6 +141,7 @@ TEST(test_ADC, ADC_DisablePasses)
     //ADC_Disable();
 }
 
+
 TEST(test_ADC, ADC_SetPinSetsRightRegisters)
 {
     /*