diff --git a/sys/compat/linuxkpi/common/src/linux_80211_macops.c b/sys/compat/linuxkpi/common/src/linux_80211_macops.c
--- a/sys/compat/linuxkpi/common/src/linux_80211_macops.c
+++ b/sys/compat/linuxkpi/common/src/linux_80211_macops.c
@@ -40,7 +40,7 @@
 #ifdef LINUXKPI_DEBUG_80211
 #define	LKPI_80211_TRACE_MO(fmt, ...)					\
     if (linuxkpi_debug_80211 & D80211_TRACE_MO)				\
-	printf("LKPI_80211_TRACE_MO %s:%d: %d %d %lu_" fmt "\n",	\
+	printf("LKPI_80211_TRACE_MO %s:%d: %d %d %lu: " fmt "\n",	\
 	    __func__, __LINE__, curcpu, curthread->td_tid,		\
 	    jiffies, __VA_ARGS__)
 #else