diff --git a/src/term.c b/src/term.c
index 7fa08c3..f2ffcc1 100644
--- a/src/term.c
+++ b/src/term.c
@@ -4580,9 +4580,10 @@
 			if (col >= 2500)
 			    is_not_xterm = TRUE;
 
-			/* PuTTY sends 0;136;0 */
+			/* PuTTY sends 0;136;0
+			 * vandyke SecureCRT sends 1;136;0 */
 			if (version == 136
-				&& STRNCMP(tp + extra - 2, "0;136;0c", 8) == 0)
+				&& STRNCMP(tp + extra - 3, ";136;0c", 8) == 0)
 			    is_not_xterm = TRUE;
 
 			/* Konsole sends 0;115;0 */