diff --git a/st.c b/st.c
index 30879f8..f01287c 100644
--- a/st.c
+++ b/st.c
@@ -454,6 +454,10 @@ selstart(int col, int row, int snap)
 	sel.oe.x = sel.ob.x = col;
 	sel.oe.y = sel.ob.y = row;
 	selnormalize();
+
+    if (sel.snap != 0)
+        sel.mode = SEL_READY;
+    tsetdirt(sel.nb.y, sel.ne.y);
 }
 
 void