diff --git a/Tools/config/ax_boost_base.m4 b/Tools/config/ax_boost_base.m4
index d540395..f5a935c 100644
--- a/Tools/config/ax_boost_base.m4
+++ b/Tools/config/ax_boost_base.m4
@@ -181,8 +181,7 @@
         AC_MSG_RESULT(yes)
     succeeded=yes
     found_system=yes
-        ],[
-        ])
+        ],[])
     AC_LANG_POP([C++])
 
 
@@ -276,8 +275,7 @@
             AC_MSG_RESULT(yes)
         succeeded=yes
         found_system=yes
-            ],[
-            ])
+            ],[])
         AC_LANG_POP([C++])
     fi