--- a/src/qtgui/ssearch_w.cpp
+++ b/src/qtgui/ssearch_w.cpp
@@ -135,9 +135,9 @@
     if (tp == SST_LANG) {
 	string reason;
         if (prefs.autoSuffsEnable)
-            sdata = wasaStringToRcl(u8, reason, (const char *)prefs.autoSuffs.toUtf8());
+            sdata = wasaStringToRcl(rclconfig, u8, reason, (const char *)prefs.autoSuffs.toUtf8());
         else
-            sdata = wasaStringToRcl(u8, reason);
+            sdata = wasaStringToRcl(rclconfig, u8, reason);
 	if (sdata == 0) {
 	    QMessageBox::warning(0, "Recoll", tr("Bad query string") +
 				 QString::fromAscii(reason.c_str()));