diff --git a/libraries/AP_Param/AP_Param.h b/libraries/AP_Param/AP_Param.h
index d40a7a30f8..db8fbde15f 100644
--- a/libraries/AP_Param/AP_Param.h
+++ b/libraries/AP_Param/AP_Param.h
@@ -54,7 +54,9 @@
 #endif
 
 // allow for dynamically added tables when scripting enabled
+#ifndef AP_PARAM_DYNAMIC_ENABLED
 #define AP_PARAM_DYNAMIC_ENABLED AP_SCRIPTING_ENABLED
+#endif
 
 // maximum number of dynamically created tables (from scripts)
 #ifndef AP_PARAM_MAX_DYNAMIC