diff --git a/Smarty.addons.php b/Smarty.addons.php
index 8fc6a3c8..2c4ea3f4 100644
--- a/Smarty.addons.php
+++ b/Smarty.addons.php
@@ -209,7 +209,6 @@ function smarty_func_assign($vars,&$smarty_obj)
 {
 	extract($vars);
 	$smarty_obj->assign($var,$val);
-	$smarty_obj->_extract = true;
 	return true;
 }
 
@@ -221,7 +220,6 @@ function smarty_func_unassign($vars,&$smarty_obj)
 {
 	extract($vars);
 	$smarty_obj->clear_assign($var);
-	$smarty_obj->_extract = true;
 	return true;
 }
 
diff --git a/Smarty.class.php b/Smarty.class.php
index 8381e71a..9d7bdf36 100644
--- a/Smarty.class.php
+++ b/Smarty.class.php
@@ -205,6 +205,7 @@ class Smarty
             if (!empty($tpl_var) && isset($value))
                 $this->_tpl_vars[$tpl_var] = $value;
         }
+		$this->_extract = true;
     }
 
     
@@ -229,6 +230,7 @@ class Smarty
                 $this->_tpl_vars[$tpl_var][] = $value;
             }
         }
+		$this->_extract = true;
     }
 
 
@@ -243,6 +245,7 @@ class Smarty
                 unset($this->_tpl_vars[$curr_var]);
         else
             unset($this->_tpl_vars[$tpl_var]);
+		$this->_extract = true;
     }
 
     
diff --git a/libs/Smarty.class.php b/libs/Smarty.class.php
index 8381e71a..9d7bdf36 100644
--- a/libs/Smarty.class.php
+++ b/libs/Smarty.class.php
@@ -205,6 +205,7 @@ class Smarty
             if (!empty($tpl_var) && isset($value))
                 $this->_tpl_vars[$tpl_var] = $value;
         }
+		$this->_extract = true;
     }
 
     
@@ -229,6 +230,7 @@ class Smarty
                 $this->_tpl_vars[$tpl_var][] = $value;
             }
         }
+		$this->_extract = true;
     }
 
 
@@ -243,6 +245,7 @@ class Smarty
                 unset($this->_tpl_vars[$curr_var]);
         else
             unset($this->_tpl_vars[$tpl_var]);
+		$this->_extract = true;
     }