diff --git a/ext/fileinfo/tests/bug78987.phpt b/ext/fileinfo/tests/bug78987.phpt
index 396c787eaee12..ab7d9cad7167f 100644
--- a/ext/fileinfo/tests/bug78987.phpt
+++ b/ext/fileinfo/tests/bug78987.phpt
@@ -13,7 +13,7 @@ $maxSize = 16 * 1024 * 1024;
 $map = array(
 	131072 => 10612736,
 	262144 => 10612736,
-	524288 => 11898880,
+	524288 => 12189696,
 	1048576 => 12709888,
 	2097152 => 14811136,
 	4194304 => 19009536,