diff --git a/backend/drm/drm.c b/backend/drm/drm.c
index fc6834ff..adbb1802 100644
--- a/backend/drm/drm.c
+++ b/backend/drm/drm.c
@@ -201,7 +201,7 @@ static bool init_planes(struct wlr_drm_backend *drm) {
 		 * logic. Primary and cursor planes should only work on a
 		 * single CRTC, and this should be perfectly adequate, but
 		 * overlay planes can potentially work with multiple CRTCs,
-		 * meaning this could return inefficent/skewed results.
+		 * meaning this could return inefficient/skewed results.
 		 *
 		 * However, we don't really care about overlay planes, as we
 		 * don't support them yet. We only bother to keep basic
diff --git a/include/wlr/types/wlr_seat.h b/include/wlr/types/wlr_seat.h
index 352483ed..4f1aa261 100644
--- a/include/wlr/types/wlr_seat.h
+++ b/include/wlr/types/wlr_seat.h
@@ -591,7 +591,7 @@ uint32_t wlr_seat_touch_send_down(struct wlr_seat *seat,
 
 /**
  * Send a touch up event for the touch point given by the `touch_id`. The event
- * will go to the client for the surface given in the cooresponding touch down
+ * will go to the client for the surface given in the corresponding touch down
  * event. This will remove the touch point. Compositors should use
  * `wlr_seat_touch_notify_up()` to respect any grabs of the touch device.
  */
diff --git a/include/wlr/types/wlr_server_decoration.h b/include/wlr/types/wlr_server_decoration.h
index cea47cdf..f4a55589 100644
--- a/include/wlr/types/wlr_server_decoration.h
+++ b/include/wlr/types/wlr_server_decoration.h
@@ -40,7 +40,7 @@ enum wlr_server_decoration_manager_mode {
 };
 
 /**
- * A decoration negociation interface which implements the KDE protocol.
+ * A decoration negotiation interface which implements the KDE protocol.
  */
 struct wlr_server_decoration_manager {
 	struct wl_global *global;