diff --git a/iptraf-ng.spec b/iptraf-ng.spec
index 07a9739..93af635 100644
--- a/iptraf-ng.spec
+++ b/iptraf-ng.spec
@@ -45,7 +45,7 @@ breakdowns, and LAN station packet and byte counts.
 
 %install
 %make_install prefix="%_prefix" V=1
-b=%buildroot
+b="%buildroot"
 install -dm 0755 "$b/%_localstatedir/lib/iptraf-ng"
 ln -s iptraf-ng "$b/%_sbindir/iptraf"
 ln -s iptraf-ng.8 "$b/%_mandir/man8/iptraf.8"