diff --git a/src/sfizz/Voice.cpp b/src/sfizz/Voice.cpp
index 7f5faadc..e57dd627 100644
--- a/src/sfizz/Voice.cpp
+++ b/src/sfizz/Voice.cpp
@@ -266,8 +266,7 @@ Voice::~Voice()
 
 }
 
-Voice::Voice(Voice&& other) {
-    ASSERT(other.impl_);
+Voice::Voice(Voice&& other) noexcept {
     impl_ = std::move(other.impl_);
 
     if (other.nextSisterVoice_ != &other) {
@@ -287,8 +286,7 @@ Voice::Voice(Voice&& other) {
     }
 }
 
-Voice& Voice::operator=(Voice&& other) {
-    ASSERT(other.impl_);
+Voice& Voice::operator=(Voice&& other) noexcept {
     impl_ = std::move(other.impl_);
 
     if (other.nextSisterVoice_ != &other) {
diff --git a/src/sfizz/Voice.h b/src/sfizz/Voice.h
index c5e55bcb..2e79584a 100644
--- a/src/sfizz/Voice.h
+++ b/src/sfizz/Voice.h
@@ -37,8 +37,8 @@ public:
     ~Voice();
     Voice(const Voice& other) = delete;
     Voice& operator=(const Voice& other) = delete;
-    Voice(Voice&& other);
-    Voice& operator=(Voice&& other);
+    Voice(Voice&& other) noexcept;
+    Voice& operator=(Voice&& other) noexcept;
 
     /**
      * @brief Get the unique identifier of this voice in a synth