diff --git a/src/LocalizedUrlGenerator.php b/src/LocalizedUrlGenerator.php
index 4282bc2..d8c8099 100644
--- a/src/LocalizedUrlGenerator.php
+++ b/src/LocalizedUrlGenerator.php
@@ -83,12 +83,9 @@ public function generateFromRequest(string $locale = null, $parameters = null, b
                 $this->determineQueryStringParameters($requestQueryString, $queryStringParameters, $keepQuery)
             );
 
-            // Merge the route parameters with the query string parameters, if any.
-            $namedRouteParameters = array_merge($routeParameters, $urlBuilder->getQuery());
-
             // Generate the URL using the route's name, if possible.
-            if ($url = $this->generateNamedRouteURL($locale, $namedRouteParameters, $absolute)) {
-                return $url;
+            if ($url = $this->generateNamedRouteURL($locale, $routeParameters, $absolute)) {
+                return $urlBuilder->getQueryString() ? $url . '?' . $urlBuilder->getQueryString() : $url;
             }
 
             // If a named route could not be resolved, replace the parameter
diff --git a/tests/Feature/Macros/Route/LocalizedUrlMacroTest.php b/tests/Feature/Macros/Route/LocalizedUrlMacroTest.php
index 4230317..9e3f2ce 100644
--- a/tests/Feature/Macros/Route/LocalizedUrlMacroTest.php
+++ b/tests/Feature/Macros/Route/LocalizedUrlMacroTest.php
@@ -987,6 +987,74 @@ public function it_ignores_query_string_parameters_using_unnamed_routes()
         ], $response->original);
     }
 
+    /** @test */
+    public function it_prefers_route_parameters_before_query_string_parameters_with_the_same_name_in_unnamed_routes()
+    {
+        $this->withoutExceptionHandling();
+        $this->setSupportedLocales(['en', 'nl']);
+
+        $model = (new ModelOneWithRouteBinding([
+            'slug' => [
+                'en' => 'en-slug',
+                'nl' => 'nl-slug',
+            ],
+        ]))->setKeyName('slug');
+
+        App::instance(ModelOneWithRouteBinding::class, $model);
+
+        Route::localized(function () use ($model) {
+            Route::get('route/{slug}', function (ModelOneWithRouteBinding $slug) {
+                return [
+                    'current' => Route::localizedUrl(),
+                    'en' => Route::localizedUrl('en'),
+                    'nl' => Route::localizedUrl('nl'),
+                ];
+            })->middleware(['web']);
+        });
+
+        $response = $this->call('GET', '/en/route/en-slug?slug=duplicate');
+        $response->assertOk();
+        $this->assertEquals([
+            'current' => URL::to('/en/route/en-slug?slug=duplicate'),
+            'en' => URL::to('/en/route/en-slug?slug=duplicate'),
+            'nl' => URL::to('/nl/route/nl-slug?slug=duplicate'),
+        ], $response->original);
+    }
+
+    /** @test */
+    public function it_prefers_route_parameters_before_query_string_parameters_with_the_same_name_in_named_routes()
+    {
+        $this->withoutExceptionHandling();
+        $this->setSupportedLocales(['en', 'nl']);
+
+        $model = (new ModelOneWithRouteBinding([
+            'slug' => [
+                'en' => 'en-slug',
+                'nl' => 'nl-slug',
+            ],
+        ]))->setKeyName('slug');
+
+        App::instance(ModelOneWithRouteBinding::class, $model);
+
+        Route::localized(function () use ($model) {
+            Route::get('route/{slug}', function (ModelOneWithRouteBinding $slug) {
+                return [
+                    'current' => Route::localizedUrl(),
+                    'en' => Route::localizedUrl('en'),
+                    'nl' => Route::localizedUrl('nl'),
+                ];
+            })->middleware(['web'])->name('test');
+        });
+
+        $response = $this->call('GET', '/en/route/en-slug?slug=duplicate');
+        $response->assertOk();
+        $this->assertEquals([
+            'current' => URL::to('/en/route/en-slug?slug=duplicate'),
+            'en' => URL::to('/en/route/en-slug?slug=duplicate'),
+            'nl' => URL::to('/nl/route/nl-slug?slug=duplicate'),
+        ], $response->original);
+    }
+
     /** @test */
     public function it_allows_optional_parameters_with_named_routes()
     {