diff --git a/include/with99.h b/include/with99.h
index 6c878a9..a669f37 100644
--- a/include/with99.h
+++ b/include/with99.h
@@ -48,10 +48,14 @@
 
 #define WITH99_priv_create_stmt_IMPL(tResNameArgs)\
 	ML99_TERMS(\
-		ML99_appl(ML99_reify(v(ML99_INTRODUCE_VAR_TO_STMT)),\
-			ML99_call(v(WITH99_priv_declare_resource),\
-				v(tResNameArgs)\
-			)\
+		ML99_if(\
+			ML99_variadicsIsSingle(ML99_call(v(WITH99_priv_restype), v(tResNameArgs))),\
+			ML99_appl(ML99_reify(v(ML99_INTRODUCE_VAR_TO_STMT)),\
+				ML99_call(v(WITH99_priv_declare_resource),\
+					v(tResNameArgs)\
+				)\
+			),\
+			v()\
 		),\
 		ML99_boolMatchWithArgs(\
 			ML99_call(\