diff --git a/build.sh b/build.sh
index ab3a5f33f..4c00130cf 100755
--- a/build.sh
+++ b/build.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-if [ "$ANT_HOME" == "" ] ; then
+if [ "$ANT_HOME" = "" ] ; then
   ANT_HOME=`pwd`
 fi
 export ANT_HOME