diff --git a/util/kconfig/conf.c b/util/kconfig/conf.c
index fef75fc756..c421773114 100644
--- a/util/kconfig/conf.c
+++ b/util/kconfig/conf.c
@@ -17,6 +17,8 @@
 
 #include "lkc.h"
 
+int kconfig_warnings = 0;
+
 static void conf(struct menu *menu);
 static void check_conf(struct menu *menu);
 static void xfgets(char *str, int size, FILE *in);
@@ -493,6 +495,7 @@ int main(int ac, char **av)
 	const char *progname = av[0];
 	int opt;
 	const char *name, *defconfig_file = NULL /* gcc uninit */;
+	char *env;
 	struct stat tmpstat;
 
 	setlocale(LC_ALL, "");
@@ -681,6 +684,13 @@ int main(int ac, char **av)
 		break;
 	}
 
+	env = getenv("KCONFIG_STRICT");
+	if (env && *env && kconfig_warnings) {
+		fprintf(stderr, _("\n*** ERROR: %d warnings encountered, and "
+			"warnings are errors.\n\n"), kconfig_warnings);
+		exit(1);
+	}
+
 	if (sync_kconfig) {
 		/* silentoldconfig is used during the build so we shall update autoconf.
 		 * All other commands are only used to generate a config.
diff --git a/util/kconfig/confdata.c b/util/kconfig/confdata.c
index 5804b29faa..a39a716f79 100644
--- a/util/kconfig/confdata.c
+++ b/util/kconfig/confdata.c
@@ -404,11 +404,7 @@ setsym:
 	if (modules_sym)
 		sym_calc_value(modules_sym);
 
-	name = getenv("KCONFIG_STRICT");
-	if (name && *name && conf_warnings) {
-		fprintf(stderr, "\nERROR: %d warnings encountered, and warnings are errors.\n\n", conf_warnings);
-		return 1;
-	}
+	kconfig_warnings += conf_warnings;
 
 	return 0;
 }
diff --git a/util/kconfig/lkc.h b/util/kconfig/lkc.h
index 590ed80cec..a7600bd7cb 100644
--- a/util/kconfig/lkc.h
+++ b/util/kconfig/lkc.h
@@ -82,6 +82,9 @@ void zconf_nextfiles(const char *name);
 int zconf_lineno(void);
 const char *zconf_curname(void);
 
+/* conf.c */
+extern int kconfig_warnings;
+
 /* confdata.c */
 const char *conf_get_configname(void);
 const char *conf_get_autoconfig_name(void);
diff --git a/util/kconfig/mconf.c b/util/kconfig/mconf.c
index 1d651c1382..b4a08440af 100644
--- a/util/kconfig/mconf.c
+++ b/util/kconfig/mconf.c
@@ -952,6 +952,7 @@ static void conf_save(void)
 static int handle_exit(void)
 {
 	int res;
+	char *env;
 
 	save_and_exit = 1;
 	reset_subtitle();
@@ -966,6 +967,13 @@ static int handle_exit(void)
 
 	end_dialog(saved_x, saved_y);
 
+	env = getenv("KCONFIG_STRICT");
+	if (env && *env && kconfig_warnings) {
+		fprintf(stderr, _("\n*** ERROR: %d warnings encountered, and "
+			"warnings are errors.\n\n"), kconfig_warnings);
+		res = 2;
+	}
+
 	switch (res) {
 	case 0:
 		if (conf_write(filename)) {
diff --git a/util/kconfig/nconf.c b/util/kconfig/nconf.c
index 984489ef2b..bc845fc6fc 100644
--- a/util/kconfig/nconf.c
+++ b/util/kconfig/nconf.c
@@ -646,6 +646,8 @@ static const char *set_config_filename(const char *config_filename)
 static int do_exit(void)
 {
 	int res;
+	char *env;
+
 	if (!conf_get_changed()) {
 		global_exit = 1;
 		return 0;
@@ -661,6 +663,15 @@ static int do_exit(void)
 		return -1;
 	}
 
+	env = getenv("KCONFIG_STRICT");
+	if (env && *env && kconfig_warnings) {
+		btn_dialog(main_window,
+			_("\nWarnings encountered, and warnings are errors.\n\n"),
+			1,
+			"<OK>");
+		res = 2;
+	}
+
 	/* if we got here, the user really wants to exit */
 	switch (res) {
 	case 0:
diff --git a/util/kconfig/symbol.c b/util/kconfig/symbol.c
index 7caabdb51c..65ba46543f 100644
--- a/util/kconfig/symbol.c
+++ b/util/kconfig/symbol.c
@@ -375,6 +375,7 @@ void sym_calc_value(struct symbol *sym)
 					sym->name);
 				expr_fprint(sym->dir_dep.expr, stderr);
 				fprintf(stderr, ")\n");
+				kconfig_warnings++;
 				expr_free(e);
 			}
 			newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri);