diff --git a/lib/cpp/Kconfig b/lib/cpp/Kconfig
index b7e5fc6c6d4..da2d96ee2c4 100644
--- a/lib/cpp/Kconfig
+++ b/lib/cpp/Kconfig
@@ -81,7 +81,7 @@ config CPP_EXCEPTIONS
 	help
 	  This option enables support of C++ exceptions.
 
-config RTTI
+config CPP_RTTI
 	bool "C++ RTTI support"
 	help
 	  This option enables support of C++ RTTI.
diff --git a/lib/cpp/Kconfig.deprecated b/lib/cpp/Kconfig.deprecated
index c5f9e152039..e52a40caf46 100644
--- a/lib/cpp/Kconfig.deprecated
+++ b/lib/cpp/Kconfig.deprecated
@@ -24,6 +24,15 @@ config EXCEPTIONS
 
 	  [DEPRECATED] Select CPP_EXCEPTIONS instead.
 
+config RTTI
+	bool "[DEPRECATED] C++ RTTI support"
+	select CPP_RTTI
+	select DEPRECATED
+	help
+	  This option enables support of C++ RTTI.
+
+	  [DEPRECATED] Select CPP_RTTI instead.
+
 endif # LIB_CPLUSPLUS
 
 endmenu