diff --git a/packages/node-type-resolver/src/NodeTypeResolver/ArrayDimFetchTypeResolver.php b/packages/node-type-resolver/src/NodeTypeResolver/ArrayDimFetchTypeResolver.php
index ee806e841e4d..a130e7d8e95c 100644
--- a/packages/node-type-resolver/src/NodeTypeResolver/ArrayDimFetchTypeResolver.php
+++ b/packages/node-type-resolver/src/NodeTypeResolver/ArrayDimFetchTypeResolver.php
@@ -6,6 +6,7 @@
 
 use PhpParser\Node;
 use PhpParser\Node\Expr\ArrayDimFetch;
+use PHPStan\Type\ArrayType;
 use PHPStan\Type\Type;
 use Rector\NodeTypeResolver\Contract\NodeTypeResolverInterface;
 use Rector\NodeTypeResolver\NodeTypeResolver;
@@ -38,6 +39,12 @@ public function getNodeClasses(): array
      */
     public function resolve(Node $node): Type
     {
-        return $this->nodeTypeResolver->resolve($node->var);
+        $arrayDimFetchType = $this->nodeTypeResolver->resolve($node->var);
+
+        if ($arrayDimFetchType instanceof ArrayType) {
+            return $arrayDimFetchType->getItemType();
+        }
+
+        return $arrayDimFetchType;
     }
 }
diff --git a/rules/code-quality/tests/Rector/If_/ExplicitBoolCompareRector/Fixture/skip_nested_array_mixed.php.inc b/rules/code-quality/tests/Rector/If_/ExplicitBoolCompareRector/Fixture/skip_nested_array_mixed.php.inc
new file mode 100644
index 000000000000..5e45dba22648
--- /dev/null
+++ b/rules/code-quality/tests/Rector/If_/ExplicitBoolCompareRector/Fixture/skip_nested_array_mixed.php.inc
@@ -0,0 +1,17 @@
+<?php
+
+namespace Rector\CodeQuality\Tests\Rector\If_\ExplicitBoolCompareRector\Fixture;
+
+final class SkipNestedArrayMixed
+{
+    public function provider(): array
+    {
+        return [];
+    }
+
+    public function run(): void
+    {
+        $data = $this->provider();
+        $this->value = $data['key'] ? 1 : 2;
+    }
+}