diff --git a/core/mac/inc/qwlan_version.h b/core/mac/inc/qwlan_version.h
index 38233af3d35c..0af2965a6ac5 100644
--- a/core/mac/inc/qwlan_version.h
+++ b/core/mac/inc/qwlan_version.h
@@ -32,9 +32,9 @@
 #define QWLAN_VERSION_MAJOR            5
 #define QWLAN_VERSION_MINOR            2
 #define QWLAN_VERSION_PATCH            0
-#define QWLAN_VERSION_EXTRA            "Q"
+#define QWLAN_VERSION_EXTRA            "R"
 #define QWLAN_VERSION_BUILD            135
 
-#define QWLAN_VERSIONSTR               "5.2.0.135Q"
+#define QWLAN_VERSIONSTR               "5.2.0.135R"
 
 #endif /* QWLAN_VERSION_H */