diff --git a/include/boost/predef/detail/_cassert.h b/include/boost/predef/detail/_cassert.h
index ccae495..940e944 100644
--- a/include/boost/predef/detail/_cassert.h
+++ b/include/boost/predef/detail/_cassert.h
@@ -8,7 +8,7 @@ http://www.boost.org/LICENSE_1_0.txt)
 #ifndef BOOST_PREDEF_DETAIL__CASSERT_H
 #define BOOST_PREDEF_DETAIL__CASSERT_H
 
-#if defined(__cpluplus)
+#if defined(__cplusplus)
 #include <cassert>
 #else
 #include <assert.h>
diff --git a/include/boost/predef/detail/_exception.h b/include/boost/predef/detail/_exception.h
index ca58c79..f5a6687 100644
--- a/include/boost/predef/detail/_exception.h
+++ b/include/boost/predef/detail/_exception.h
@@ -8,7 +8,7 @@ http://www.boost.org/LICENSE_1_0.txt)
 #ifndef BOOST_PREDEF_DETAIL__EXCEPTION_H
 #define BOOST_PREDEF_DETAIL__EXCEPTION_H
 
-#if defined(__cpluplus)
+#if defined(__cplusplus)
 #include <exception>
 #endif