diff --git a/src/Symfony/Component/Routing/CHANGELOG.md b/src/Symfony/Component/Routing/CHANGELOG.md
index d04581f405069..206c1ccf612ff 100644
--- a/src/Symfony/Component/Routing/CHANGELOG.md
+++ b/src/Symfony/Component/Routing/CHANGELOG.md
@@ -1,6 +1,12 @@
 CHANGELOG
 =========
 
+4.0.0
+-----
+
+ * dropped support for using UTF-8 route patterns without using the `utf8` option
+ * dropped support for using UTF-8 route requirements without using the `utf8` option
+
 3.3.0
 -----
 
diff --git a/src/Symfony/Component/Routing/RouteCompiler.php b/src/Symfony/Component/Routing/RouteCompiler.php
index a64776a01ae2e..872203f3f5d6f 100644
--- a/src/Symfony/Component/Routing/RouteCompiler.php
+++ b/src/Symfony/Component/Routing/RouteCompiler.php
@@ -103,8 +103,7 @@ private static function compilePattern(Route $route, $pattern, $isHost)
         $needsUtf8 = $route->getOption('utf8');
 
         if (!$needsUtf8 && $useUtf8 && preg_match('/[\x80-\xFF]/', $pattern)) {
-            $needsUtf8 = true;
-            @trigger_error(sprintf('Using UTF-8 route patterns without setting the "utf8" option is deprecated since Symfony 3.2 and will throw a LogicException in 4.0. Turn on the "utf8" route option for pattern "%s".', $pattern), E_USER_DEPRECATED);
+            throw new \LogicException(sprintf('Cannot use UTF-8 route patterns without setting the "utf8" option for route "%s".', $route->getPath()));
         }
         if (!$useUtf8 && $needsUtf8) {
             throw new \LogicException(sprintf('Cannot mix UTF-8 requirements with non-UTF-8 pattern "%s".', $pattern));
@@ -176,8 +175,7 @@ private static function compilePattern(Route $route, $pattern, $isHost)
                 if (!preg_match('//u', $regexp)) {
                     $useUtf8 = false;
                 } elseif (!$needsUtf8 && preg_match('/[\x80-\xFF]|(?<!\\\\)\\\\(?:\\\\\\\\)*+(?-i:X|[pP][\{CLMNPSZ]|x\{[A-Fa-f0-9]{3})/', $regexp)) {
-                    $needsUtf8 = true;
-                    @trigger_error(sprintf('Using UTF-8 route requirements without setting the "utf8" option is deprecated since Symfony 3.2 and will throw a LogicException in 4.0. Turn on the "utf8" route option for variable "%s" in pattern "%s".', $varName, $pattern), E_USER_DEPRECATED);
+                    throw new \LogicException(sprintf('Cannot use UTF-8 route requirements without setting the "utf8" option for variable "%s" in pattern "%s".', $varName, $pattern));
                 }
                 if (!$useUtf8 && $needsUtf8) {
                     throw new \LogicException(sprintf('Cannot mix UTF-8 requirement with non-UTF-8 charset for variable "%s" in pattern "%s".', $varName, $pattern));
diff --git a/src/Symfony/Component/Routing/Tests/RouteCompilerTest.php b/src/Symfony/Component/Routing/Tests/RouteCompilerTest.php
index 54006d7edfadf..0d114ec6a4d69 100644
--- a/src/Symfony/Component/Routing/Tests/RouteCompilerTest.php
+++ b/src/Symfony/Component/Routing/Tests/RouteCompilerTest.php
@@ -184,9 +184,8 @@ public function provideCompileData()
     }
 
     /**
-     * @group legacy
      * @dataProvider provideCompileImplicitUtf8Data
-     * @expectedDeprecation Using UTF-8 route %s without setting the "utf8" option is deprecated %s.
+     * @expectedException \LogicException
      */
     public function testCompileImplicitUtf8Data($name, $arguments, $prefix, $regex, $variables, $tokens, $deprecationType)
     {