diff --git a/pandora_agents/win32/ChangeLog b/pandora_agents/win32/ChangeLog
index 715e838d3e..cae394d96c 100644
--- a/pandora_agents/win32/ChangeLog
+++ b/pandora_agents/win32/ChangeLog
@@ -1,3 +1,8 @@
+2011-03-08  Ramon Novoa  <rnovoa@artica.es>
+
+	* modules/pandora_module_regexp.cc: Added support for extended regular
+	  expressions.
+
 2010-12-10  Ramon Novoa  <rnovoa@artica.es>
 
 	* bin/util/pandora_update.exe: Updated. Some paths may have been wrong.
diff --git a/pandora_agents/win32/modules/pandora_module_regexp.cc b/pandora_agents/win32/modules/pandora_module_regexp.cc
index ca9ebdab05..235a5dbc1d 100755
--- a/pandora_agents/win32/modules/pandora_module_regexp.cc
+++ b/pandora_agents/win32/modules/pandora_module_regexp.cc
@@ -42,7 +42,7 @@ Pandora_Module_Regexp::Pandora_Module_Regexp (string name, string source, string
     this->source = source;
  
     // Compile the regular expression
-    if (regcomp (&this->regexp, pattern.c_str (), 0) != 0) {
+    if (regcomp (&this->regexp, pattern.c_str (), REG_EXTENDED) != 0) {
        pandoraLog ("Invalid regular expression %s", pattern.c_str ());
     }