diff --git a/src/sfizz/modulations/ModKey.cpp b/src/sfizz/modulations/ModKey.cpp
index 57038748..69d8750f 100644
--- a/src/sfizz/modulations/ModKey.cpp
+++ b/src/sfizz/modulations/ModKey.cpp
@@ -113,7 +113,7 @@ std::string ModKey::toString() const
 
 bool sfz::ModKey::operator==(const ModKey &other) const noexcept
 {
-    return id_ == other.id_ && region_ && other.region_ &&
+    return id_ == other.id_ && region_ == other.region_ &&
         parameters() == other.parameters();
 }