diff --git a/Configure.hxx.in b/Configure.hxx.in
index 4a3aebd18e5e5aeb5352e2f2acc84c31c5b539a2..9075bea937dd00955841750743e93a2e92d8177f 100644
--- a/Configure.hxx.in
+++ b/Configure.hxx.in
@@ -22,7 +22,8 @@
 #define KWSYS_DO_NOT_CLEAN_PUTENV 
 #else
 #undef KWSYS_DO_NOT_CLEAN_PUTENV
-#else
+#endif
+
 
 
 /* Whether ANSI C++ stream headers are to be used.  */