diff --git a/CMakeLists.txt b/CMakeLists.txt
index ed6f570ec..74686b6b1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -154,6 +154,7 @@ if (KDEPIM_BUILD_DESKTOP)
   set(kmailprivate_mailmerge_LIB_SRCS
      mailmerge/mailmergewidget.cpp
      mailmerge/attachmentlistwidget.cpp
+     mailmerge/mailmergedialog.cpp
   )
 
   set(kmailprivate_job_LIB_SRCS