diff --git a/AK/FlyString.h b/AK/FlyString.h
index d304909383f..7bf52e82d15 100644
--- a/AK/FlyString.h
+++ b/AK/FlyString.h
@@ -217,7 +217,8 @@ struct ASCIICaseInsensitiveFlyStringTraits : public Traits<String> {
 
 [[nodiscard]] ALWAYS_INLINE AK::FlyString operator""_fly_string(char const* cstring, size_t length)
 {
-    return AK::FlyString::from_utf8(AK::StringView(cstring, length)).release_value();
+    ASSERT(Utf8View(AK::StringView(cstring, length)).validate());
+    return AK::FlyString::from_utf8_without_validation({ cstring, length });
 }
 
 #if USING_AK_GLOBALLY
diff --git a/AK/String.h b/AK/String.h
index 72224caff41..a1fb182219c 100644
--- a/AK/String.h
+++ b/AK/String.h
@@ -354,5 +354,6 @@ struct ASCIICaseInsensitiveStringTraits : public Traits<String> {
 
 [[nodiscard]] ALWAYS_INLINE AK::String operator""_string(char const* cstring, size_t length)
 {
-    return AK::String::from_utf8(AK::StringView(cstring, length)).release_value();
+    ASSERT(Utf8View(AK::StringView(cstring, length)).validate());
+    return AK::String::from_utf8_without_validation({ cstring, length });
 }