diff --git a/ui/color/color_set.cc b/ui/color/color_set.cc
index 56564d7..2798a3c 100644
--- a/ui/color/color_set.cc
+++ b/ui/color/color_set.cc
@@ -11,7 +11,7 @@ ColorSet::ColorSet(ColorSetId id, ColorMap&& colors)
 
 ColorSet::ColorSet(ColorSet&&) noexcept = default;
 
-ColorSet& ColorSet::operator=(ColorSet&&) noexcept = default;
+ColorSet& ColorSet::operator=(ColorSet&&) = default;
 
 ColorSet::~ColorSet() = default;