diff --git a/tools/assistant/lib/lib.pro b/tools/assistant/lib/lib.pro
index 66f280d..3bef0db 100644
--- a/tools/assistant/lib/lib.pro
+++ b/tools/assistant/lib/lib.pro
@@ -13,6 +13,7 @@ TEMPLATE = lib
 TARGET = QtHelp
 DEFINES += QHELP_LIB QT_CLUCENE_SUPPORT
 CONFIG += qt warn_on
+unix:CONFIG += explicitlib
 mac|win32:CONFIG += debug_and_release