diff --git a/driver/amuseplay.cpp b/driver/amuseplay.cpp
index e83b197..9d85bbf 100644
--- a/driver/amuseplay.cpp
+++ b/driver/amuseplay.cpp
@@ -398,6 +398,7 @@ struct AppCallback : boo::IApplicationCallback {
 #endif
         }
         m_updateDisp = true;
+        break;
       default:
         break;
       }
@@ -870,6 +871,7 @@ void EventCallback::specialKeyDown(boo::ESpecialKey key, boo::EModifierKey mods,
     break;
   case boo::ESpecialKey::Esc:
     m_app.m_breakout = true;
+    break;
   default:
     break;
   }
diff --git a/lib/AudioGroupSampleDirectory.cpp b/lib/AudioGroupSampleDirectory.cpp
index 50f8ad2..16b47e1 100644
--- a/lib/AudioGroupSampleDirectory.cpp
+++ b/lib/AudioGroupSampleDirectory.cpp
@@ -893,6 +893,7 @@ AudioGroupSampleDirectory::toGCNData(const AudioGroupDatabase& group) const {
     case SampleFileState::WAVRecent:
     case SampleFileState::WAVNoCompressed:
       group.makeCompressedVersion(ent.first, ent.second.get().get());
+      break;
     default:
       break;
     }
diff --git a/lib/DirectoryEnumerator.cpp b/lib/DirectoryEnumerator.cpp
index 7f27268..0448e0f 100644
--- a/lib/DirectoryEnumerator.cpp
+++ b/lib/DirectoryEnumerator.cpp
@@ -206,6 +206,7 @@ DirectoryEnumerator::DirectoryEnumerator(SystemStringView path, Mode mode, bool
     if (mode == Mode::DirsSorted)
       break;
     rewinddir(dir);
+    [[fallthrough]];
   }
   case Mode::FilesSorted: {
     if (mode == Mode::FilesSorted)
diff --git a/lib/Sequencer.cpp b/lib/Sequencer.cpp
index 28b3fdf..293f821 100644
--- a/lib/Sequencer.cpp
+++ b/lib/Sequencer.cpp
@@ -291,19 +291,24 @@ void Sequencer::ChannelState::setCtrlValue(uint8_t ctrl, int8_t val) {
     // RPN LSB
     m_rpn &= ~0x7f;
     m_rpn |= val;
+    break;
   case 99:
     // RPN MSB
     m_rpn &= ~0x3f80;
     m_rpn |= val << 7;
+    break;
   case 6:
     if (m_rpn == 0)
       m_pitchWheelRange = val;
+    break;
   case 96:
     if (m_rpn == 0)
       m_pitchWheelRange += 1;
+    break;
   case 97:
     if (m_rpn == 0)
       m_pitchWheelRange -= 1;
+    break;
   default:
     break;
   }
diff --git a/lib/SongConverter.cpp b/lib/SongConverter.cpp
index 94988ec..b5f5ef4 100644
--- a/lib/SongConverter.cpp
+++ b/lib/SongConverter.cpp
@@ -144,6 +144,7 @@ public:
           uint32_t tempo = 0;
           memcpy(&reinterpret_cast<uint8_t*>(&tempo)[1], &*it, 3);
           m_tempos.emplace(m_tick, 60000000 / SBig(tempo));
+          [[fallthrough]];
         }
         default:
           it += length;