diff --git a/src/h/object.h b/src/h/object.h
index efca6bc58..66240dd81 100644
--- a/src/h/object.h
+++ b/src/h/object.h
@@ -34,7 +34,7 @@ typedef unsigned char byte;
 #ifdef ECL_SHORT_FLOAT
 #undef ECL_SHORT_FLOAT
 #endif
-#define ECL_EXTERNALIZABLE
+        /* #define ECL_EXTERNALIZABLE */
 
 /*
 	Implementation types.