st.c | 4 +++-

diff --git a/st.c b/st.c
index 134e7242e9b18d33dd82df401cbd266d9b9f30fd..623376e1b172781f66dd21ef220e165a8146eaad 100644
--- a/st.c
+++ b/st.c
@@ -2471,8 +2471,10 @@ 		tnewline(1);
 		gp = &term.line[term.c.y][term.c.x];
 	}
 
-	if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
+	if (IS_SET(MODE_INSERT) && term.c.x+width < term.col) {
 		memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
+		gp->mode &= ~ATTR_WIDE;
+	}
 
 	if (term.c.x+width > term.col) {
 		tnewline(1);