diff --git a/cmake/scripts/SquirrelExport.cmake b/cmake/scripts/SquirrelExport.cmake
index fbb4207cd1..c5a78c4f6f 100644
--- a/cmake/scripts/SquirrelExport.cmake
+++ b/cmake/scripts/SquirrelExport.cmake
@@ -351,7 +351,7 @@ foreach(LINE IN LISTS SOURCE_LINES)
         else()
             string(APPEND SQUIRREL_EXPORT "\n\tSQ${API_CLS}.PreRegister(engine, \"${API_SUPER_CLS}\");")
         endif()
-        if(NOT "${SUPER_CLS}" MATCHES "^ScriptEvent" AND NOT "${CLS}" STREQUAL "ScriptEvent")
+        if(DEFINED CLS_PARAMS AND NOT "${SUPER_CLS}" MATCHES "^ScriptEvent" AND NOT "${CLS}" STREQUAL "ScriptEvent")
             if("${CLS_TYPES}" STREQUAL "v")
                 string(APPEND SQUIRREL_EXPORT "\n\tSQ${API_CLS}.AddSQAdvancedConstructor(engine);")
             else()