diff --git a/iptables.spec b/iptables.spec
index 8b2abd5..52c0c74 100644
--- a/iptables.spec
+++ b/iptables.spec
@@ -1,5 +1,5 @@
 %define build_devel 1
-%define _kernel $(ls -d /usr/src/kernels/*/ | head -1)
+%define _kernel $(ls -d /usr/src/kernels/* | head -1)
 
 Name: iptables
 Summary: Tools for managing Linux kernel packet filtering capabilities