diff --git a/src/charset.c b/src/charset.c
index 006caa2..918f9a5 100644
--- a/src/charset.c
+++ b/src/charset.c
@@ -1184,8 +1184,12 @@
 	{
 	    col -= W_WIDTH(wp);
 	    numberextra = W_WIDTH(wp) - (numberextra - win_col_off2(wp));
-	    if (*p_sbr != NUL && col >= (colnr_T)STRLEN(p_sbr))
-		col -= (colnr_T)STRLEN(p_sbr);
+	    if (*p_sbr != NUL)
+	    {
+		colnr_T sbrlen = (colnr_T)MB_CHARLEN(p_sbr);
+		if (col >= sbrlen)
+		    col -= sbrlen;
+	    }
 	    if (numberextra > 0)
 		col = col % numberextra;
 	}