diff --git a/include/sys/cbprintf.h b/include/sys/cbprintf.h
index 195089eb234..64a6fc74565 100644
--- a/include/sys/cbprintf.h
+++ b/include/sys/cbprintf.h
@@ -26,9 +26,9 @@ extern "C" {
  * - Clang 3.0 https://releases.llvm.org/3.0/docs/ClangReleaseNotes.html
  */
 #ifndef Z_C_GENERIC
-#if ((__STDC_VERSION__ >= 201112L) || \
+#if !defined(__cplusplus) && (((__STDC_VERSION__ >= 201112L) || \
 	((__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) >= 40900) || \
-	((__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__) >= 30000))
+	((__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__) >= 30000)))
 #define Z_C_GENERIC 1
 #else
 #define Z_C_GENERIC 0