diff --git a/cplusplus/level1_single_api/3_ir/IRBuild/Makefile b/cplusplus/level1_single_api/3_ir/IRBuild/Makefile
index b127b21f4d1a38e5ed14a73450b2aa0a8ecc288e..8a544f2b1c3a3599612f27ea07a8eb7e3fafe348 100644
--- a/cplusplus/level1_single_api/3_ir/IRBuild/Makefile
+++ b/cplusplus/level1_single_api/3_ir/IRBuild/Makefile
@@ -1,5 +1,5 @@
 ifeq (${ASCEND_INSTALL_PATH},)
-    ASCEND_PATH := /usr/local/Ascend
+    ASCEND_PATH := /usr/local/Ascend/latest
 else
     ASCEND_PATH := ${ASCEND_INSTALL_PATH}
 endif