diff --git a/src/frontends/qt4/CMakeLists.txt b/src/frontends/qt4/CMakeLists.txt
index 16d8b515ec..f0675e203c 100644
--- a/src/frontends/qt4/CMakeLists.txt
+++ b/src/frontends/qt4/CMakeLists.txt
@@ -30,6 +30,7 @@ add_custom_command(
 		-DIMAGES_DIR=${TOP_SRC_DIR}/lib/images
 		-DRESOURCE_NAME=${resource_name}
 		-DMAPPED_DIR=${TOP_SRC_DIR}/lib/
+                -DSUFFIX=${LYX_INSTALL_SUFFIX}
 		-P ${TOP_SCRIPT_PATH}/LyXCreateImagesResource.cmake
 	)