diff --git a/src/GuessTypeFromSwitcherAttributes.php b/src/GuessTypeFromSwitcherAttributes.php
index 1375d9e..b9be5f0 100644
--- a/src/GuessTypeFromSwitcherAttributes.php
+++ b/src/GuessTypeFromSwitcherAttributes.php
@@ -34,9 +34,11 @@ private function guessType(Arg $args, Scope $scope) : Type
 
 			if ($argsType instanceof IntersectionType && $argsType->isIterable()) {
 				// Let's look into each types to see if it contains 'raw' key.
-				foreach($argsType->getTypes() as $type) {
-					if ($type->hasOffsetValueType(new ConstantStringType('raw'))->yes()) {
-						$isRaw = $type->getOffsetValueType(new ConstantStringType('raw'))->getValue() ? TrinaryLogic::createYes() : TrinaryLogic::createNo();
+				$types = $argsType->getTypes();
+				foreach($types as $type) {
+					$rawKey = new ConstantStringType('raw');
+					if ($type->hasOffsetValueType($rawKey)->yes()) {
+						$isRaw = $type->getOffsetValueType($rawKey)->toBoolean()->isTrue() ? TrinaryLogic::createYes() : TrinaryLogic::createNo();
 					}
 				}
 			}
diff --git a/tests/data/get_languages_list.php b/tests/data/get_languages_list.php
index 112454b..a7afe50 100644
--- a/tests/data/get_languages_list.php
+++ b/tests/data/get_languages_list.php
@@ -30,7 +30,7 @@
 assertType('array<int, mixed>', $model->get_languages_list($array));
 
 // With array_merge() result passed as parameter.
-assertType('array<int, mixed>', $model->get_languages_list(array_merge($array, ['fields' => 'slug'])));
+assertType('array<int, string>', $model->get_languages_list(array_merge($array, ['fields' => 'slug'])));
 
 // With 'fields' key set on top of variable containing unknown data.
 $array['fields'] = 'slug';
diff --git a/tests/data/pll_the_languages.php b/tests/data/pll_the_languages.php
index b3bc3aa..c729197 100644
--- a/tests/data/pll_the_languages.php
+++ b/tests/data/pll_the_languages.php
@@ -40,7 +40,7 @@
 
 // With unknown variable merged.
 $args = array_merge( [ 'raw' => 1 ], $options );
-assertType('array<string, mixed>|string', pll_the_languages($args));
+assertType('array<string, mixed>', pll_the_languages($args));
 
 // With raw attribute set to true outside.
 $array['raw'] = 1;
diff --git a/tests/data/the_languages.php b/tests/data/the_languages.php
index b5ab698..244a8cf 100644
--- a/tests/data/the_languages.php
+++ b/tests/data/the_languages.php
@@ -43,7 +43,7 @@
 
 // With unknown variable merged.
 $args = array_merge( $array, [ 'raw' => 1 ] );
-assertType('array<string, mixed>|string', $switcher->the_languages($link, $args));
+assertType('array<string, mixed>', $switcher->the_languages($link, $args));
 
 // With raw attribute set to true outside.
 $array['raw'] = 1;