diff --git a/ext/standard/tests/strings/pack.phpt b/ext/standard/tests/strings/pack.phpt
index 60b546fce63..b36eee1e570 100644
--- a/ext/standard/tests/strings/pack.phpt
+++ b/ext/standard/tests/strings/pack.phpt
@@ -145,7 +145,7 @@ Array
 )
 Array
 (
-    [1] => -1
+    [1] => 0
 )
 Array
 (
@@ -185,7 +185,7 @@ Array
 )
 Array
 (
-    [1] => -1
+    [1] => 0
 )
 Array
 (
@@ -233,7 +233,7 @@ Array
 )
 Array
 (
-    [1] => -1
+    [1] => 0
 )
 Array
 (
@@ -305,7 +305,7 @@ Array
 )
 Array
 (
-    [1] => -1
+    [1] => 0
 )
 Array
 (