diff --git a/include/wifi.h b/include/wifi.h
index 5ac7411..4c81db1 100644
--- a/include/wifi.h
+++ b/include/wifi.h
@@ -712,7 +712,9 @@ enum HT_CAP_AMPDU_FACTOR {
  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
  */
 #define IEEE80211_MIN_AMPDU_BUF 0x8
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(4,19,0))
 #define IEEE80211_MAX_AMPDU_BUF 0x40
+#endif
 
 
 /* Spatial Multiplexing Power Save Modes */