diff --git a/mozilla/configure b/mozilla/configure
index 4ca9a5d4eeb..871c6bc2d04 100755
--- a/mozilla/configure
+++ b/mozilla/configure
@@ -4048,7 +4048,7 @@ done
     case "$PBBUILD" in
       *xcodebuild*)
         
-        XCODEBUILD_VERSION=`$PBBUILD -version 2>/dev/null | sed -e 's/.*DevToolsCore-\([0-9]*\).*/\1/' | tail -n 1`
+        XCODEBUILD_VERSION=`$PBBUILD -version 2>/dev/null | xargs | sed -e 's/.*DevToolsCore-\([0-9]*\).*/\1/'`
         
         if test -n "$XCODEBUILD_VERSION" && test "$XCODEBUILD_VERSION" -ge 620 ; then
           HAS_XCODE_2_1=1;