diff --git a/ath/if_ath_radar.h b/ath/if_ath_radar.h
index be43d03..6efe6fc 100644
--- a/ath/if_ath_radar.h
+++ b/ath/if_ath_radar.h
@@ -19,7 +19,7 @@
  * $Id: if_ath_radar.h 2464 2007-06-15 22:51:56Z mtaylor $
  */
 /*
- * Defintions for the Atheros Wireless LAN controller driver.
+ * Definitions for the Atheros Wireless LAN controller driver.
  */
 #ifndef _IF_ATH_RADAR_H
 #define _IF_ATH_RADAR_H
diff --git a/ath/if_athioctl.h b/ath/if_athioctl.h
index 54f12d0..e49e092 100644
--- a/ath/if_athioctl.h
+++ b/ath/if_athioctl.h
@@ -37,7 +37,7 @@
  */
 
 /*
- * Ioctl-related defintions for the Atheros Wireless LAN controller driver.
+ * Ioctl-related definitions for the Atheros Wireless LAN controller driver.
  */
 #ifndef _DEV_ATH_ATHIOCTL_H
 #define _DEV_ATH_ATHIOCTL_H
diff --git a/ath/if_athvar.h b/ath/if_athvar.h
index 789afb5..e6b72ce 100644
--- a/ath/if_athvar.h
+++ b/ath/if_athvar.h
@@ -37,7 +37,7 @@
  */
 
 /*
- * Defintions for the Atheros Wireless LAN controller driver.
+ * Definitions for the Atheros Wireless LAN controller driver.
  */
 #ifndef _DEV_ATH_ATHVAR_H
 #define _DEV_ATH_ATHVAR_H
diff --git a/ath_rate/minstrel/minstrel.h b/ath_rate/minstrel/minstrel.h
index af3aed5..0de34a1 100644
--- a/ath_rate/minstrel/minstrel.h
+++ b/ath_rate/minstrel/minstrel.h
@@ -63,7 +63,7 @@
  */
 
 /*
- * Defintions for the Atheros Wireless LAN controller driver.
+ * Definitions for the Atheros Wireless LAN controller driver.
  */
 #ifndef _DEV_ATH_RATE_MINSTREL_H
 #define _DEV_ATH_RATE_MINSTREL_H
diff --git a/ath_rate/onoe/onoe.h b/ath_rate/onoe/onoe.h
index 9a800d3..4364c1e 100644
--- a/ath_rate/onoe/onoe.h
+++ b/ath_rate/onoe/onoe.h
@@ -37,7 +37,7 @@
  */
 
 /*
- * Defintions for the Atheros Wireless LAN controller driver.
+ * Definitions for the Atheros Wireless LAN controller driver.
  */
 #ifndef _DEV_ATH_RATE_ONOE_H
 #define _DEV_ATH_RATE_ONOE_H
diff --git a/ath_rate/sample/sample.h b/ath_rate/sample/sample.h
index 103bda4..306ad36 100644
--- a/ath_rate/sample/sample.h
+++ b/ath_rate/sample/sample.h
@@ -37,7 +37,7 @@
  */
 
 /*
- * Defintions for the Atheros Wireless LAN controller driver.
+ * Definitions for the Atheros Wireless LAN controller driver.
  */
 #ifndef _DEV_ATH_RATE_SAMPLE_H
 #define _DEV_ATH_RATE_SAMPLE_H
diff --git a/net80211/ieee80211_var.h b/net80211/ieee80211_var.h
index 5461248..835d485 100644
--- a/net80211/ieee80211_var.h
+++ b/net80211/ieee80211_var.h
@@ -293,7 +293,7 @@ struct ieee80211vap {
 	u_int32_t app_filter;				/* filters which management frames are forwarded to app */
 };
 
-/* Debug functions need the defintion of struct ieee80211vap because iv_debug 
+/* Debug functions need the definition of struct ieee80211vap because iv_debug
  * is used at runtime to determine if we should log an event
  */
 #include <net80211/ieee80211_debug.h>