diff --git a/src/common/serialization/vst3/event-list.h b/src/common/serialization/vst3/event-list.h
index 8f8c2520..c98a04e1 100644
--- a/src/common/serialization/vst3/event-list.h
+++ b/src/common/serialization/vst3/event-list.h
@@ -161,7 +161,7 @@ struct YaScaleEvent {
  * A wrapper around `Event` for serialization purposes, as some event types
  * include heap pointers.
  */
-struct YaEvent {
+struct alignas(16) YaEvent {
     YaEvent() noexcept;
 
     /**
diff --git a/src/common/serialization/vst3/param-value-queue.h b/src/common/serialization/vst3/param-value-queue.h
index 8243bcbe..cdd38e81 100644
--- a/src/common/serialization/vst3/param-value-queue.h
+++ b/src/common/serialization/vst3/param-value-queue.h
@@ -30,7 +30,7 @@
  * a single parameter during the current processing cycle. Used in
  * `YaParameterChanges`.
  */
-class YaParamValueQueue : public Steinberg::Vst::IParamValueQueue {
+class alignas(16) YaParamValueQueue : public Steinberg::Vst::IParamValueQueue {
    public:
     /**
      * We only provide a default constructor here, because we need to fill the
diff --git a/src/common/serialization/vst3/process-data.h b/src/common/serialization/vst3/process-data.h
index e4141079..a8a21c55 100644
--- a/src/common/serialization/vst3/process-data.h
+++ b/src/common/serialization/vst3/process-data.h
@@ -36,7 +36,7 @@
  *
  * @see YaProcessData
  */
-class YaAudioBusBuffers {
+class alignas(16) YaAudioBusBuffers {
    public:
     /**
      * We only provide a default constructor here, because we need to fill the