diff --git a/Libraries/LibURL/Pattern/Pattern.cpp b/Libraries/LibURL/Pattern/Pattern.cpp
index 7a4da8edeb1..bfcefdda33f 100644
--- a/Libraries/LibURL/Pattern/Pattern.cpp
+++ b/Libraries/LibURL/Pattern/Pattern.cpp
@@ -95,7 +95,7 @@ PatternErrorOr<Pattern> Pattern::create(Input const& input, Optional<String> con
     // 6. If processedInit["protocol"] is a special scheme and processedInit["port"] is a string which represents its
     //    corresponding default port in radix-10 using ASCII digits then set processedInit["port"] to the empty string.
     if (is_special_scheme(processed_init.protocol.value())) {
-        auto maybe_port = processed_init.port->to_number<u16>();
+        auto maybe_port = processed_init.port->to_number<u16>(TrimWhitespace::No);
         if (maybe_port.has_value() && *maybe_port == default_port_for_scheme(*processed_init.protocol).value())
             processed_init.port = String {};
     }
diff --git a/Tests/LibWeb/Text/expected/wpt-import/urlpattern/urlpattern.any.txt b/Tests/LibWeb/Text/expected/wpt-import/urlpattern/urlpattern.any.txt
index 06c928f6346..1b2d5cabebe 100644
--- a/Tests/LibWeb/Text/expected/wpt-import/urlpattern/urlpattern.any.txt
+++ b/Tests/LibWeb/Text/expected/wpt-import/urlpattern/urlpattern.any.txt
@@ -2,8 +2,8 @@ Harness status: OK
 
 Found 354 tests
 
-351 Pass
-3 Fail
+352 Pass
+2 Fail
 Pass	Loading data...
 Pass	Pattern: [{"pathname":"/foo/bar"}] Inputs: [{"pathname":"/foo/bar"}]
 Pass	Pattern: [{"pathname":"/foo/bar"}] Inputs: [{"pathname":"/foo/ba"}]
@@ -170,7 +170,7 @@ Pass	Pattern: [{"pathname":":
 Pass	Pattern: [{"port":""}] Inputs: [{"protocol":"http","port":"80"}]
 Pass	Pattern: [{"protocol":"http","port":"80"}] Inputs: [{"protocol":"http","port":"80"}]
 Pass	Pattern: [{"protocol":"http","port":"80{20}?"}] Inputs: [{"protocol":"http","port":"80"}]
-Fail	Pattern: [{"protocol":"http","port":"80 "}] Inputs: [{"protocol":"http","port":"80"}]
+Pass	Pattern: [{"protocol":"http","port":"80 "}] Inputs: [{"protocol":"http","port":"80"}]
 Pass	Pattern: [{"protocol":"http","port":"100000"}] Inputs: [{"protocol":"http","port":"100000"}]
 Pass	Pattern: [{"port":"80"}] Inputs: [{"protocol":"http","port":"80"}]
 Pass	Pattern: [{"protocol":"http{s}?","port":"80"}] Inputs: [{"protocol":"http","port":"80"}]