diff --git a/lib/fizzy/value.hpp b/lib/fizzy/value.hpp
index 97754d72a9..ddb8f74b92 100644
--- a/lib/fizzy/value.hpp
+++ b/lib/fizzy/value.hpp
@@ -38,8 +38,6 @@ union Value
     template <typename T>
     constexpr Value(T) = delete;
 
-    constexpr operator uint64_t() const noexcept { return i64; }
-
     /// Get the value as the given type. Handy in templates.
     /// Only required specializations are provided.
     template <typename T>
diff --git a/test/unittests/value_test.cpp b/test/unittests/value_test.cpp
index 269aa86f62..f0f027358b 100644
--- a/test/unittests/value_test.cpp
+++ b/test/unittests/value_test.cpp
@@ -95,10 +95,3 @@ TEST(value, as_floating_point)
     EXPECT_EQ(Value{d}.f64, d);
     EXPECT_EQ(Value{d}.as<double>(), d);
 }
-
-TEST(value, implicit_conversion_to_i64)
-{
-    const Value v{1};
-    const uint64_t x = v;
-    EXPECT_EQ(x, 1);
-}