diff --git a/overlay/overlay.pro b/overlay/overlay.pro
index 856e112d764..3c25b09e16c 100644
--- a/overlay/overlay.pro
+++ b/overlay/overlay.pro
@@ -1,5 +1,7 @@
 include (../compiler.pri)
 
+VERSION = 1.2.4
+TARGET_EXT = .dll
 TEMPLATE = lib
 CONFIG -= qt
 CONFIG *= dll shared debug_and_release warn_on