diff --git a/build.sh b/build.sh
index b81e24663..0445db994 100755
--- a/build.sh
+++ b/build.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-if test ! -f build\classes\org\apache\tools\ant\Main.class ; then
+if test ! -f build/classes/org/apache/tools/ant/Main.class ; then
   ./bootstrap.sh $*
 fi    
 
@@ -52,10 +52,8 @@ if $cygwin; then
 fi
 
 NEW_ANT_HOME=$ANT_HOME
-if [ "$NEW_ANT_HOME" == "" ] ; then
+if [ ! "$NEW_ANT_HOME" ] ; then
   NEW_ANT_HOME=dist
 fi
 
 ${JAVA_HOME}/bin/java -classpath $LOCALCLASSPATH org.apache.tools.ant.Main -Dant.home=$NEW_ANT_HOME -logger org.apache.tools.ant.NoBannerLogger -emacs $*
-
-