--- a/src/evdev.c
+++ b/src/evdev.c
@@ -434,8 +434,11 @@
         for (i = 0; i < REL_CNT; i++)
         {
             int map = pEvdev->axis_map[i];
-            if (pEvdev->delta[i] && map != -1)
+            if (pEvdev->delta[i] && map != -1) {
                 valuator_mask_set(pEvdev->vals, map, pEvdev->delta[i]);
+            } else {
+                valuator_mask_unset(map, i);
+            }
         }
     }
     /*