diff --git a/src/xbus/xbus.pro b/src/xbus/xbus.pro
index 2d231b97e..013ac7d00 100644
--- a/src/xbus/xbus.pro
+++ b/src/xbus/xbus.pro
@@ -8,7 +8,8 @@ TEMPLATE = lib
 CONFIG += shared
 CONFIG += blackmisc blackcore
 
-LIBS += -lXPLM
+equals(WORD_SIZE,64): LIBS += -lXPLM_64
+equals(WORD_SIZE,32): LIBS += -lXPLM
 
 DEPENDPATH += . ../../src
 INCLUDEPATH += . ../../src