diff --git a/src/core/include/mp-units/framework/dimension.h b/src/core/include/mp-units/framework/dimension.h
index 2a65aa9e..7155a740 100644
--- a/src/core/include/mp-units/framework/dimension.h
+++ b/src/core/include/mp-units/framework/dimension.h
@@ -322,7 +322,7 @@ MP_UNITS_EXPORT template<dimension_symbol_formatting fmt = dimension_symbol_form
                                                                                    oversized_symbol_text);
   return storage.view();
 #else
-  return basic_fixed_string<CharT, text.size()>(std::from_range, text);
+  return basic_fixed_string<CharT, oversized_symbol_text.size()>(std::from_range, oversized_symbol_text);
 #endif
 }
 
diff --git a/src/core/include/mp-units/framework/unit.h b/src/core/include/mp-units/framework/unit.h
index d1b58e56..73655ef2 100644
--- a/src/core/include/mp-units/framework/unit.h
+++ b/src/core/include/mp-units/framework/unit.h
@@ -833,7 +833,7 @@ MP_UNITS_EXPORT template<unit_symbol_formatting fmt = unit_symbol_formatting{},
                                                                                    oversized_symbol_text);
   return storage.view();
 #else
-  return basic_fixed_string<CharT, text.size()>(std::from_range, text);
+  return basic_fixed_string<CharT, oversized_symbol_text.size()>(std::from_range, oversized_symbol_text);
 #endif
 }