diff --git a/sys/dev/atkbdc/psm.c b/sys/dev/atkbdc/psm.c
index 645d77b7a89..b5e18ece103 100644
--- a/sys/dev/atkbdc/psm.c
+++ b/sys/dev/atkbdc/psm.c
@@ -361,7 +361,7 @@ static struct {
       0x08, MOUSE_PS2INTELLI_PACKETSIZE, enable_msintelli, },
     { MOUSE_MODEL_GLIDEPOINT,		/* ALPS GlidePoint */
       0xc0, MOUSE_PS2_PACKETSIZE, enable_aglide, },
-    { MOUSE_MODEL_THINK,		/* Kensignton ThinkingMouse */
+    { MOUSE_MODEL_THINK,		/* Kensington ThinkingMouse */
       0x80, MOUSE_PS2_PACKETSIZE, enable_kmouse, },
     { MOUSE_MODEL_VERSAPAD,		/* Interlink electronics VersaPad */
       0xe8, MOUSE_PS2VERSA_PACKETSIZE, enable_versapad, },
diff --git a/sys/sys/mouse.h b/sys/sys/mouse.h
index fe066ef56f7..f8039ae873a 100644
--- a/sys/sys/mouse.h
+++ b/sys/sys/mouse.h
@@ -175,7 +175,7 @@ typedef struct mousemode {
 #define MOUSE_PROTO_HITTAB	8	/* Hitachi Tablet 3 bytes */
 #define MOUSE_PROTO_GLIDEPOINT	9	/* ALPS GlidePoint, 3/4 bytes */
 #define MOUSE_PROTO_INTELLI	10	/* MS IntelliMouse, 4 bytes */
-#define MOUSE_PROTO_THINK	11	/* Kensignton Thinking Mouse, 3/4 bytes */
+#define MOUSE_PROTO_THINK	11	/* Kensington Thinking Mouse, 3/4 bytes */
 #define MOUSE_PROTO_SYSMOUSE	12	/* /dev/sysmouse */
 #define MOUSE_PROTO_X10MOUSEREM	13	/* X10 MouseRemote, 3 bytes */
 #define MOUSE_PROTO_KIDSPAD	14	/* Genius Kidspad */