diff --git a/Installation/cmake/modules/CGAL_CreateSingleSourceCGALProgram.cmake b/Installation/cmake/modules/CGAL_CreateSingleSourceCGALProgram.cmake
index efcfd97d9d2..21a6685544a 100644
--- a/Installation/cmake/modules/CGAL_CreateSingleSourceCGALProgram.cmake
+++ b/Installation/cmake/modules/CGAL_CreateSingleSourceCGALProgram.cmake
@@ -4,23 +4,24 @@ function(create_single_source_cgal_program firstfile )
     set(firstfile "${CMAKE_CURRENT_SOURCE_DIR}/${firstfile}")
   endif()
 
+  get_filename_component(exe_name ${firstfile} NAME_WE)
+
   if(EXISTS "${firstfile}")
-  
+
     set( all "${firstfile}" )
-    
+
     # remaining files
     foreach( i ${ARGN} )
-      set( all ${all} ${CMAKE_CURRENT_SOURCE_DIR}/${i} ) 
+      set( all ${all} ${CMAKE_CURRENT_SOURCE_DIR}/${i} )
     endforeach()
-    
 
-    get_filename_component(exe_name ${firstfile} NAME_WE)
+
     add_executable(${exe_name} ${all})
-    
+
     add_to_cached_list( CGAL_EXECUTABLE_TARGETS ${exe_name} )
-    
+
     # Link the executable to CGAL and third-party libraries
-    if ( CGAL_AUTO_LINK_ENABLED )    
+    if ( CGAL_AUTO_LINK_ENABLED )
 
       target_link_libraries(${exe_name} ${CGAL_3RD_PARTY_LIBRARIES} )
 
@@ -29,7 +30,8 @@ function(create_single_source_cgal_program firstfile )
       target_link_libraries(${exe_name} ${CGAL_LIBRARIES} ${CGAL_3RD_PARTY_LIBRARIES} )
 
     endif()
-  
+  else()
+    message(AUTHOR_WARNING "The executable ${exe_name} will not be created because the source file ${firstfile} does not exist.")
   endif()
-    
+
 endfunction()