diff --git a/src/ecmascript/ecmascript.c b/src/ecmascript/ecmascript.c
index fc647d4d..3cddefc1 100644
--- a/src/ecmascript/ecmascript.c
+++ b/src/ecmascript/ecmascript.c
@@ -81,6 +81,7 @@ static int interpreter_count;
 static INIT_LIST_OF(struct string_list_item, allowed_urls);
 static INIT_LIST_OF(struct string_list_item, disallowed_urls);
 
+char *console_error_filename;
 char *console_log_filename;
 
 char *local_storage_filename;
@@ -542,13 +543,11 @@ init_ecmascript_module(struct module *module)
 {
 	read_url_list();
 
-	/* ecmascript console log */
 	if (elinks_home) {
+		/* ecmascript console log */
 		console_log_filename = straconcat(elinks_home, "/console.log", NULL);
-	}
-
-	/* ecmascript local storage db location */
-	if (elinks_home) {
+		console_error_filename = straconcat(elinks_home, "/console.err", NULL);
+		/* ecmascript local storage db location */
 		local_storage_filename = straconcat(elinks_home, "/elinks_ls.db", NULL);
 	}
 }
diff --git a/src/ecmascript/ecmascript.h b/src/ecmascript/ecmascript.h
index c9a6e50e..56f32657 100644
--- a/src/ecmascript/ecmascript.h
+++ b/src/ecmascript/ecmascript.h
@@ -119,6 +119,7 @@ int get_ecmascript_enable(struct ecmascript_interpreter *interpreter);
 
 void check_for_rerender(struct ecmascript_interpreter *interpreter, const char* text);
 
+extern char *console_error_filename;
 extern char *console_log_filename;
 
 extern char *local_storage_filename;
diff --git a/src/ecmascript/spidermonkey-shared.h b/src/ecmascript/spidermonkey-shared.h
index 3342199d..10aa9fd1 100644
--- a/src/ecmascript/spidermonkey-shared.h
+++ b/src/ecmascript/spidermonkey-shared.h
@@ -3,6 +3,7 @@
 
 #include <jsapi.h>
 #include <jsfriendapi.h>
+#include <js/Conversions.h>
 
 #include "util/string.h"
 
@@ -47,8 +48,7 @@ static inline char *
 jsval_to_string(JSContext *ctx, JS::HandleValue hvp)
 {
 /* Memory must be freed in caller */
-
-	JSString *st = hvp.toString();
+	JSString *st = JS::ToString(ctx, hvp);
 	JS::RootedString rst(ctx, st);
 	JS::UniqueChars utf8chars = JS_EncodeStringToUTF8(ctx, rst);
 
diff --git a/src/ecmascript/spidermonkey/console.c b/src/ecmascript/spidermonkey/console.c
index 6b922355..e29f5f4c 100644
--- a/src/ecmascript/spidermonkey/console.c
+++ b/src/ecmascript/spidermonkey/console.c
@@ -73,23 +73,22 @@ console_get_property(JSContext *ctx, JS::HandleObject hobj, JS::HandleId hid, JS
 	return true;
 }
 
+static bool console_error(JSContext *ctx, unsigned int argc, JS::Value *vp);
 static bool console_log(JSContext *ctx, unsigned int argc, JS::Value *vp);
 
 const spidermonkeyFunctionSpec console_funcs[] = {
-	{ "log",		console_log,	 	2 },
+	{ "log",		console_log,	 	1 },
+	{ "error",		console_error,	 	1 },
 	{ NULL }
 };
 
 static bool
-console_log(JSContext *ctx, unsigned int argc, JS::Value *vp)
+console_log_common(JSContext *ctx, unsigned int argc, JS::Value *vp, const char *log_filename)
 {
-#ifdef ECMASCRIPT_DEBUG
-	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
-#endif
 	struct ecmascript_interpreter *interpreter = JS_GetContextPrivate(ctx);
 	JS::CallArgs args = CallArgsFromVp(argc, vp);
 
-	if (argc != 1 || !console_log_filename)
+	if (argc != 1 || !log_filename)
 	{
 		args.rval().setBoolean(false);
 		return(true);
@@ -99,7 +98,7 @@ console_log(JSContext *ctx, unsigned int argc, JS::Value *vp)
 	{
 		unsigned char *key = jsval_to_string(ctx, args[0]);
 
-		FILE *f = fopen(console_log_filename, "a");
+		FILE *f = fopen(log_filename, "a");
 
 		if (f)
 		{
@@ -112,3 +111,21 @@ console_log(JSContext *ctx, unsigned int argc, JS::Value *vp)
 	args.rval().setBoolean(true);
 	return(true);
 }
+
+static bool
+console_log(JSContext *ctx, unsigned int argc, JS::Value *vp)
+{
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
+#endif
+	return console_log_common(ctx, argc, vp, console_log_filename);
+}
+
+static bool
+console_error(JSContext *ctx, unsigned int argc, JS::Value *vp)
+{
+#ifdef ECMASCRIPT_DEBUG
+	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
+#endif
+	return console_log_common(ctx, argc, vp, console_error_filename);
+}