diff --git a/src/core-fmt/include/units/format.h b/src/core-fmt/include/units/format.h
index a4ffe7e7..04703db8 100644
--- a/src/core-fmt/include/units/format.h
+++ b/src/core-fmt/include/units/format.h
@@ -418,7 +418,7 @@ public:
   }
 
   template<typename FormatContext>
-  [[nodiscard]] auto format(const quantity& q, FormatContext& ctx)
+  auto format(const quantity& q, FormatContext& ctx)
   {
     // process dynamic width and precision
     if (specs.global.dynamic_width_index >= 0)