diff --git a/core/mac/inc/qwlan_version.h b/core/mac/inc/qwlan_version.h
index 75c0e318393a..01d320d87e85 100644
--- a/core/mac/inc/qwlan_version.h
+++ b/core/mac/inc/qwlan_version.h
@@ -32,9 +32,9 @@
 #define QWLAN_VERSION_MAJOR            2
 #define QWLAN_VERSION_MINOR            0
 #define QWLAN_VERSION_PATCH            8
-#define QWLAN_VERSION_EXTRA            "R"
+#define QWLAN_VERSION_EXTRA            "S"
 #define QWLAN_VERSION_BUILD            18
 
-#define QWLAN_VERSIONSTR               "2.0.8.18R"
+#define QWLAN_VERSIONSTR               "2.0.8.18S"
 
 #endif /* QWLAN_VERSION_H */