diff --git a/ibus.changes b/ibus.changes
index 26e16b4..cbead4e 100644
--- a/ibus.changes
+++ b/ibus.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Tue Dec 19 14:50:21 UTC 2017 - ftake@geeko.jp
+
+- Fix boo#1073524: IBus does not work on Qt5 applicatin under
+  Qt5 only environment
+  * do not set QT_IM_MODULE=xim for Qt5 applications
+  * use QT4_IM_MODULE for Qt4 applications
+
 -------------------------------------------------------------------
 Sun Nov 19 13:56:06 UTC 2017 - hillwood@opensuse.org
 
diff --git a/xim.d-ibus-121 b/xim.d-ibus-121
index c32ef58..60213c3 100644
--- a/xim.d-ibus-121
+++ b/xim.d-ibus-121
@@ -43,13 +43,16 @@ else
 fi
 
 export LC_CTYPE=$LANG
-export XMODIFIERS="@im=ibus" 
+export XMODIFIERS="@im=ibus"
 export GTK_IM_MODULE=ibus
 export QT_IM_SWITCHER=imsw-multi
+# Qt5
+export QT_IM_MODULE=ibus
+# Qt4
 if [ -e /usr/$SYS_LIB/qt4/plugins/inputmethods/libqtim-ibus.so ]; then
-    export QT_IM_MODULE=ibus
+    export QT4_IM_MODULE=ibus
 else
-    export QT_IM_MODULE=xim
+    export QT4_IM_MODULE=xim
 fi
 
 case "$WINDOWMANAGER" in