diff -ur mksh.orig/main.c mksh/main.c
--- mksh.orig/main.c	2020-10-01 22:29:21.000000000 +0200
+++ mksh/main.c	2021-01-18 19:11:59.615180226 +0100
@@ -695,9 +695,14 @@
 		if (Flag(FLOGIN))
 			include(substitute("$HOME/.profile", 0), 0, NULL, true);
 		if (Flag(FTALKING)) {
-			cp = substitute("${ENV:-" MKSHRC_PATH "}", DOTILDE);
+			cp = substitute("${ENV}", DOTILDE);
 			if (cp[0] != '\0')
 				include(cp, 0, NULL, true);
+			else {
+				cp = substitute(MKSHRC_PATH, DOTILDE);
+				include("/etc/mkshrc", 0, NULL, true);
+				include(cp, 0, NULL, true);
+			}
 		}
 	}
 	if (restricted_shell) {