diff --git a/Makefile b/Makefile
index 8cd8c5a..137fbbd 100755
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@ EXTRA_CFLAGS += -Wno-unused-variable
 EXTRA_CFLAGS += -Wno-unused-label
 #EXTRA_CFLAGS += -Wno-unused-parameter
 EXTRA_CFLAGS += -Wno-unused-function
-EXTRA_CFLAGS += -Wimplicit-fallthrough=0
+EXTRA_CFLAGS += -Wno-implicit-fallthrough
 #EXTRA_CFLAGS += -Wno-parentheses-equality
 #EXTRA_CFLAGS += -Wno-pointer-bool-conversion
 EXTRA_CFLAGS += -Wno-unknown-pragmas
diff --git a/os_dep/linux/ioctl_cfg80211.c b/os_dep/linux/ioctl_cfg80211.c
index e9f4ba9..ca7b7dc 100644
--- a/os_dep/linux/ioctl_cfg80211.c
+++ b/os_dep/linux/ioctl_cfg80211.c
@@ -2333,6 +2333,7 @@ static int cfg80211_rtw_get_station(struct wiphy *wiphy,
 
 	sinfo->filled |= STATION_INFO_BSS_PARAM;
 
+#if defined (LINUX_VERSION_CODE) && (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 20, 0))
 	if (!psta->no_short_preamble_set)
 	sinfo->bss_param.flags |= STATION_INFO_BSS_PARAM_SHORT_PREAMBLE;
 
@@ -2348,6 +2349,7 @@ static int cfg80211_rtw_get_station(struct wiphy *wiphy,
 	sinfo->bss_param.dtim_period = pwrctl->dtim;
 
 	sinfo->bss_param.beacon_interval = get_beacon_interval(&cur_network->network);
+#endif
 
 	}