diff --git a/corsika/detail/framework/geometry/QuantityVector.inl b/corsika/detail/framework/geometry/QuantityVector.inl
index c7f9457b98dc0935c710f6d93fef6c53aab69f56..a932e4de8b596217bde32b1bb672e69866f05dc6 100644
--- a/corsika/detail/framework/geometry/QuantityVector.inl
+++ b/corsika/detail/framework/geometry/QuantityVector.inl
@@ -17,8 +17,8 @@
 namespace corsika {
 
   template <typename TDimension>
-  inline typename QuantityVector<TDimension>::quantity_type
-  QuantityVector<TDimension>::operator[](size_t const index) const {
+  inline typename QuantityVector<TDimension>::quantity_type QuantityVector<TDimension>::
+  operator[](size_t const index) const {
     return quantity_type(phys::units::detail::magnitude_tag, eigenVector_[index]);
   }