diff --git a/Installation/CMakeLists.txt b/Installation/CMakeLists.txt
index 7fcaf91c0353..10fd9e9888c9 100644
--- a/Installation/CMakeLists.txt
+++ b/Installation/CMakeLists.txt
@@ -940,7 +940,7 @@ if(CGAL_BRANCH_BUILD)
 
     set(compile_options
         "\
-${CMAKE_CXX_FLAGS} -DCGAL_EIGEN3_ENABLED -DCGAL_PROFILE  -DCGAL_USE_CORE\
+${CMAKE_CXX_FLAGS} -DCGAL_EIGEN3_ENABLED -DCGAL_PROFILE  -DCGAL_USE_CORE \
 ${Qt6Widgets_DEFINITIONS} ${Qt6OpenGL_DEFINITIONS} ${Qt6Gui_DEFINITIONS} \
 ${Qt6OpenGL_EXECUTABLE_COMPILE_FLAGS} -fPIC \
 ${Qt6Gui_EXECUTABLE_COMPILE_FLAGS} \