diff --git a/AK/Utf8View.cpp b/AK/Utf8View.cpp
index bfd7fd95e3..791f1e2c95 100644
--- a/AK/Utf8View.cpp
+++ b/AK/Utf8View.cpp
@@ -126,18 +126,15 @@ bool Utf8View::starts_with(Utf8View const& start) const
 bool Utf8View::contains(u32 needle) const
 {
     if (needle <= 0x7f) {
-        // OPTIMIZATION: Fast path for ASCII
-        for (u8 code_point : as_string()) {
-            if (code_point == needle)
-                return true;
-        }
-    } else {
-        for (u32 code_point : *this) {
-            if (code_point == needle)
-                return true;
-        }
+        // OPTIMIZATION: An ASCII byte can only appear as itself in valid UTF-8, so memchr is safe here.
+        auto bytes = as_string();
+        return memchr(bytes.characters_without_null_termination(), needle, bytes.length()) != nullptr;
     }
 
+    for (u32 code_point : *this) {
+        if (code_point == needle)
+            return true;
+    }
     return false;
 }