diff --git a/src/core/include/units/ratio.h b/src/core/include/units/ratio.h
index d892825a..0fb2f428 100644
--- a/src/core/include/units/ratio.h
+++ b/src/core/include/units/ratio.h
@@ -90,24 +90,23 @@ struct ratio {
 
   [[nodiscard]] friend constexpr std::intmax_t numerator(const ratio& r)
   {
-    std::intmax_t num = r.num;
+    std::intmax_t true_num = r.num;
     for (auto i = r.exp; i > 0; --i) {
-      num *= 10;
+      true_num *= 10;
     }
-    return num;
+    return true_num;
   }
 
   [[nodiscard]] friend constexpr std::intmax_t denominator(const ratio& r)
   {
-    std::intmax_t den = r.den;
+    std::intmax_t true_den = r.den;
     for (auto i = r.exp; i < 0; ++i) {
-      den *= 10;
+      true_den *= 10;
     }
-    return den;
+    return true_den;
   }
 };
 
-
 [[nodiscard]] constexpr ratio inverse(const ratio& r) { return ratio(r.den, r.num, -r.exp); }
 
 [[nodiscard]] constexpr bool is_integral(const ratio& r)