diff --git a/src/main/include/log4cxx/spi/appenderattachable.h b/src/main/include/log4cxx/spi/appenderattachable.h
index bd49f0d..679aa4d 100644
--- a/src/main/include/log4cxx/spi/appenderattachable.h
+++ b/src/main/include/log4cxx/spi/appenderattachable.h
@@ -59,10 +59,10 @@ namespace log4cxx
             virtual AppenderPtr getAppender(const LogString& name) const = 0;
 
             /**
-         Returns <code>true</code> if the specified appender is in list of
-         attached attached, <code>false</code> otherwise.
-         */
-         virtual bool isAttached(const AppenderPtr& appender) const = 0;
+             * Returns <code>true</code> if the specified appender is in list of
+             * attached attached, <code>false</code> otherwise.
+             */
+            virtual bool isAttached(const AppenderPtr& appender) const = 0;
 
             /**
              * Remove all previously added appenders.