diff --git a/src/PendingObjects/TestCall.php b/src/PendingObjects/TestCall.php
index f8ada58d..287ca7a9 100644
--- a/src/PendingObjects/TestCall.php
+++ b/src/PendingObjects/TestCall.php
@@ -81,17 +81,17 @@ final class TestCall
     /**
      * Asserts that the test throws the given `$exceptionClass` when called if the given condition is true.
      *
-     * @param Closure|bool|int $condition
+     * @param (callable(): bool)|bool $condition
      */
     public function throwsIf($condition, string $exception, string $exceptionMessage = null): TestCall
     {
         $condition = is_callable($condition)
             ? $condition
-            : Closure::fromCallable(function () use ($condition): bool {
-                return (bool) $condition;
-            });
+            : static function () use ($condition): mixed {
+                return $condition;
+            };
 
-        if ($condition() === true) {
+        if ($condition()) {
             return $this->throws($exception, $exceptionMessage);
         }
 
diff --git a/tests/.snapshots/success.txt b/tests/.snapshots/success.txt
index cac11672..40ab0a49 100644
--- a/tests/.snapshots/success.txt
+++ b/tests/.snapshots/success.txt
@@ -695,5 +695,5 @@
   ✓ it is a test
   ✓ it uses correct parent class
 
-  Tests:  4 incompleted, 9 skipped, 454 passed
+  Tests:  4 incompleted, 9 skipped, 459 passed
   
\ No newline at end of file