diff --git a/src/core/include/units/magnitude.h b/src/core/include/units/magnitude.h
index 7656a348..fe814dd2 100644
--- a/src/core/include/units/magnitude.h
+++ b/src/core/include/units/magnitude.h
@@ -368,9 +368,6 @@ struct magnitude {
 
   // Whether this magnitude represents a rational number.
   friend constexpr bool is_rational(const magnitude&) { return (detail::is_rational(BPs) && ...); }
-
-  // Implicit conversion to ratio.
-  constexpr explicit(false) operator ratio() const;
 };
 
 // Implementation for Magnitude concept (below).
@@ -395,7 +392,7 @@ template<typename T, BasePower auto... BPs>
 constexpr T get_value(const magnitude<BPs...>&)
 {
   // Force the expression to be evaluated in a constexpr context, to catch, e.g., overflow.
-  constexpr auto result = detail::checked_static_cast<T>((detail::compute_base_power<T>(BPs) * ... * 1));
+  constexpr auto result = detail::checked_static_cast<T>((detail::compute_base_power<T>(BPs) * ... * T{1}));
 
   return result;
 }
diff --git a/test/unit_test/runtime/magnitude_test.cpp b/test/unit_test/runtime/magnitude_test.cpp
index 22a3dd4b..e5d46f26 100644
--- a/test/unit_test/runtime/magnitude_test.cpp
+++ b/test/unit_test/runtime/magnitude_test.cpp
@@ -383,12 +383,10 @@ TEST_CASE("Constructing ratio from rational magnitude")
   SECTION("Irrational magnitude does not convert to ratio")
   {
     // The following code should not compile.
-    // constexpr ratio radical = pow<ratio{1, 2}>(as_magnitude<2>());
-    // (void)radical;
+    // as_ratio(pow<ratio{1, 2}>(as_magnitude<2>()));
 
     // The following code should not compile.
-    // constexpr ratio degrees_per_radian = as_magnitude<180>() / pi_to_the<1>();
-    // (void)degrees_per_radian;
+    // as_ratio(as_magnitude<180>() / pi_to_the<1>());
   }
 }