diff --git a/src/OrientatedItemFactory.php b/src/OrientatedItemFactory.php
index e3e9a868..2f1a7492 100644
--- a/src/OrientatedItemFactory.php
+++ b/src/OrientatedItemFactory.php
@@ -80,6 +80,9 @@ public function getBestOrientation(
             $orientationAMinGap = min($orientationAWidthLeft, $orientationALengthLeft);
             $orientationBMinGap = min($orientationBWidthLeft, $orientationBLengthLeft);
 
+            if ($orientationAMinGap === 0 && $orientationBMinGap === 0) {
+                return $a->getDepth() <=> $b->getDepth();
+            }
             if ($orientationAMinGap === 0) { // prefer A if it leaves no gap
                 return -1;
             }
diff --git a/tests/InfalliblePackerTest.php b/tests/InfalliblePackerTest.php
index 7c0b426c..d3c4e7dd 100644
--- a/tests/InfalliblePackerTest.php
+++ b/tests/InfalliblePackerTest.php
@@ -452,6 +452,6 @@ public function testIssue182B(): void
         /** @var PackedBox[] $packedBoxes */
         $packedBoxes = iterator_to_array($packer->pack(), false);
 
-        self::assertCount(42, $packedBoxes);
+        self::assertCount(41, $packedBoxes);
     }
 }