diff --git a/tomcat-cas/bin/startup.sh b/tomcat-cas/bin/startup.sh
index 3a68fe8..7b10287 100644
--- a/tomcat-cas/bin/startup.sh
+++ b/tomcat-cas/bin/startup.sh
@@ -21,11 +21,8 @@
 
 # Better OS/400 detection: see Bugzilla 31132
 os400=false
-darwin=false
 case "`uname`" in
-CYGWIN*) cygwin=true;;
 OS400*) os400=true;;
-Darwin*) darwin=true;;
 esac
 
 # resolve links - $0 may be a softlink
@@ -40,13 +37,13 @@
     PRG=`dirname "$PRG"`/"$link"
   fi
 done
- 
+
 PRGDIR=`dirname "$PRG"`
 EXECUTABLE=catalina.sh
 
 # Check that target executable exists
 if $os400; then
-  # -x will Only work on the os400 if the files are: 
+  # -x will Only work on the os400 if the files are:
   # 1. owned by the user
   # 2. owned by the PRIMARY group of the user
   # this will not work if the user belongs in secondary groups
@@ -58,6 +55,6 @@
     echo "This file is needed to run this program"
     exit 1
   fi
-fi 
+fi
 
 exec "$PRGDIR"/"$EXECUTABLE" start "$@"