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-rw-r--r--system/core/Input.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/system/core/Input.php b/system/core/Input.php
index 30d528b89..87e6cfed9 100644
--- a/system/core/Input.php
+++ b/system/core/Input.php
@@ -508,7 +508,7 @@ class CI_Input {
$which = FILTER_FLAG_IPV6;
break;
default:
- $which = NULL;
+ $which = 0;
break;
}