diff --git a/mozilla/webshell/embed/gtk/configure.in b/mozilla/webshell/embed/gtk/configure.in
index 209757d8399..d19cc17aecd 100644
--- a/mozilla/webshell/embed/gtk/configure.in
+++ b/mozilla/webshell/embed/gtk/configure.in
@@ -60,11 +60,10 @@ AC_ARG_WITH(nspr,
 [  --with-nspr=\$dir        location of nspr headers and libs],
 	NSPR_DIR=$withval, NSPR_DIR=)
 
-if test -z $NSPR_DIR; then
+if test -z "$NSPR_DIR"; then
 	NSPR_DIR=$MOZILLA_DIR/dist
 fi
 
-
 dnl ========================================================
 dnl By default, turn rtti and exceptions off on g++/egcs
 dnl ========================================================