diff --git a/installer/installer-windows.iss.in b/installer/installer-windows.iss.in
index ca3d3979..791a2501 100644
--- a/installer/installer-windows.iss.in
+++ b/installer/installer-windows.iss.in
@@ -1,5 +1,5 @@
 #define MyAppName "obs-websocket"
-#define MyAppVersion "@CMAKE_PROJECT_VERSION@"
+#define MyAppVersion "@OBS_WEBSOCKET_VERSION@"
 #define MyAppPublisher "Stephane Lepin"
 #define MyAppURL "http://github.com/Palakis/obs-websocket"