fix typo

diff --git a/lib/compiler.php b/lib/compiler.php
index 003e1c2f1241654999c0568a33f62eb3858d73a7..bc164503f9159282dfded00b3c1d17b95ea08b72 100644 (file)
--- a/lib/compiler.php
+++ b/lib/compiler.php
@@ -187,7 +187,7 @@ class IPF_Template_Compiler
                 return '';
             }
 
-            if ($this->environment->hasModifier($m[1])) {
+            if (!$this->environment->hasModifier($m[1])) {
                 trigger_error(sprintf('Unknown modifier: (%s) %s', $expr, $m[1]), E_USER_ERROR);
                 return '';
             }