1 files changed, 1 insertions, 1 deletions
diff --git a/zaptel.c b/zaptel.c
index fe4cb6f..98b5ac5 100755
--- a/zaptel.c
+++ b/zaptel.c
@@ -57,7 +57,7 @@
 #include <linux/if_ppp.h>
 #endif
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20)
+#ifndef CONFIG_OLD_HDLC_API
 #define NEW_HDLC_INTERFACE
 #endif