diff --git a/bacnet-stack/tsm.h b/bacnet-stack/tsm.h
index e65fcc25..19529196 100644
--- a/bacnet-stack/tsm.h
+++ b/bacnet-stack/tsm.h
@@ -112,15 +112,17 @@ bool tsm_get_transaction_pdu(
   uint16_t *pdu_len);
 
 bool tsm_invoke_id_free(uint8_t invokeID);
-#else
-#define tsm_free_invoke_id(x) (void)x;
-
-
-#endif
 
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */
 
+/* define out any functions necessary for compile */
+#else
+
+#define tsm_free_invoke_id(x) (void)x;
+
+#endif
+
 #endif