diff --git a/src/SPC/command/DoctorCommand.php b/src/SPC/command/DoctorCommand.php
index 9aabdeca..bc77511a 100644
--- a/src/SPC/command/DoctorCommand.php
+++ b/src/SPC/command/DoctorCommand.php
@@ -75,8 +75,9 @@ class DoctorCommand extends BaseCommand
         } catch (\Throwable $e) {
             $this->output->writeln('<error>' . $e->getMessage() . '</error>');
 
-            pcntl_signal(SIGINT, SIG_IGN);
-
+            if (extension_loaded('pcntl')) {
+                pcntl_signal(SIGINT, SIG_IGN);
+            }
             return static::FAILURE;
         }
 
diff --git a/src/SPC/doctor/CheckListHandler.php b/src/SPC/doctor/CheckListHandler.php
index bfeb39c4..de5733df 100644
--- a/src/SPC/doctor/CheckListHandler.php
+++ b/src/SPC/doctor/CheckListHandler.php
@@ -34,12 +34,23 @@ final class CheckListHandler
      */
     public function emitFix(OutputInterface $output, CheckResult $result): void
     {
-        pcntl_signal(SIGINT, function () use ($output) {
-            $output->writeln('<error>You cancelled fix</error>');
-        });
+        if (PHP_OS_FAMILY === 'Windows') {
+            sapi_windows_set_ctrl_handler(function () use ($output) {
+                $output->writeln('<error>You cancelled fix</error>');
+            });
+        } elseif (extension_loaded('pcntl')) {
+            pcntl_signal(SIGINT, function () use ($output) {
+                $output->writeln('<error>You cancelled fix</error>');
+            });
+        }
 
         $fix_result = call_user_func($this->fix_map[$result->getFixItem()], ...$result->getFixParams());
-        pcntl_signal(SIGINT, SIG_IGN);
+
+        if (PHP_OS_FAMILY === 'Windows') {
+            sapi_windows_set_ctrl_handler(null);
+        } elseif (extension_loaded('pcntl')) {
+            pcntl_signal(SIGINT, SIG_IGN);
+        }
 
         if ($fix_result) {
             $output->writeln('<info>Fix done</info>');
diff --git a/src/SPC/doctor/item/OSCheckList.php b/src/SPC/doctor/item/OSCheckList.php
index ad6b2551..60ce10c6 100644
--- a/src/SPC/doctor/item/OSCheckList.php
+++ b/src/SPC/doctor/item/OSCheckList.php
@@ -17,7 +17,7 @@ class OSCheckList
     public function checkOS(): ?CheckResult
     {
         if (!in_array(PHP_OS_FAMILY, ['Darwin', 'Linux', 'BSD'])) {
-            return CheckResult::fail('Current OS is not supported');
+            return CheckResult::fail('Current OS is not supported: ' . PHP_OS_FAMILY);
         }
         $distro = PHP_OS_FAMILY === 'Linux' ? (' ' . SystemUtil::getOSRelease()['dist']) : '';
         return CheckResult::ok(PHP_OS_FAMILY . ' ' . php_uname('m') . $distro . ', supported');