diff --git a/src/buffer.c b/src/buffer.c
index ee5d33c..af17b63 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -5096,7 +5096,8 @@
 	    if ((prev != -1 && STRNCMP(s, "ex:", (size_t)3) == 0)
 		    || STRNCMP(s, "vi:", (size_t)3) == 0)
 		break;
-	    if (STRNCMP(s, "vim", 3) == 0)
+	    /* Accept both "vim" and "Vim". */
+	    if ((s[0] == 'v' || s[0] == 'V') && s[1] == 'i' && s[2] == 'm')
 	    {
 		if (s[3] == '<' || s[3] == '=' || s[3] == '>')
 		    e = s + 4;