diff --git a/firmware/Gravity/display.h b/firmware/Gravity/display.h
index d5a5f6e..faeb4d1 100644
--- a/firmware/Gravity/display.h
+++ b/firmware/Gravity/display.h
@@ -256,6 +256,12 @@ void DisplayMainPage() {
                 case Clock::SOURCE_EXTERNAL_PPQN_4:
                     subText = F("4 PPQN");
                     break;
+                case Clock::SOURCE_EXTERNAL_PPQN_2:
+                    subText = F("2 PPQN");
+                    break;
+                case Clock::SOURCE_EXTERNAL_PPQN_1:
+                    subText = F("1 PPQN");
+                    break;
                 case Clock::SOURCE_EXTERNAL_MIDI:
                     subText = F("MIDI");
                     break;
diff --git a/src/clock.h b/src/clock.h
index 613667a..ea39214 100644
--- a/src/clock.h
+++ b/src/clock.h
@@ -35,6 +35,8 @@ class Clock {
         SOURCE_INTERNAL,
         SOURCE_EXTERNAL_PPQN_24,
         SOURCE_EXTERNAL_PPQN_4,
+        SOURCE_EXTERNAL_PPQN_2,
+        SOURCE_EXTERNAL_PPQN_1,
         SOURCE_EXTERNAL_MIDI,
         SOURCE_LAST,
     };
@@ -96,6 +98,14 @@ class Clock {
                 uClock.setClockMode(uClock.EXTERNAL_CLOCK);
                 uClock.setInputPPQN(uClock.PPQN_4);
                 break;
+            case SOURCE_EXTERNAL_PPQN_2:
+                uClock.setClockMode(uClock.EXTERNAL_CLOCK);
+                uClock.setInputPPQN(uClock.PPQN_2);
+                break;
+            case SOURCE_EXTERNAL_PPQN_1:
+                uClock.setClockMode(uClock.EXTERNAL_CLOCK);
+                uClock.setInputPPQN(uClock.PPQN_1);
+                break;
             case SOURCE_EXTERNAL_MIDI:
                 uClock.setClockMode(uClock.EXTERNAL_CLOCK);
                 uClock.setInputPPQN(uClock.PPQN_24);