diff --git a/src/js/spidermonkey-shared.cpp b/src/js/spidermonkey-shared.cpp
index 8ca6cfecd..de5be00d5 100644
--- a/src/js/spidermonkey-shared.cpp
+++ b/src/js/spidermonkey-shared.cpp
@@ -75,6 +75,14 @@ spidermonkey_runtime_release(void)
 	}
 }
 
+void
+spidermonkey_release_all_runtimes(void)
+{
+	while (spidermonkey_runtime_refcount > 0) {
+		spidermonkey_runtime_release();
+	}
+}
+
 /** An ELinks-specific replacement for JS_DefineFunctions().
  *
  * @relates spidermonkeyFunctionSpec */
diff --git a/src/js/spidermonkey-shared.h b/src/js/spidermonkey-shared.h
index 23ad09691..a6fd057e6 100644
--- a/src/js/spidermonkey-shared.h
+++ b/src/js/spidermonkey-shared.h
@@ -12,6 +12,7 @@ extern JSContext *main_ctx;
 extern long spidermonkey_memory_limit;
 int spidermonkey_runtime_addref(void);
 void spidermonkey_runtime_release(void);
+void spidermonkey_release_all_runtimes(void);
 
 /** An ELinks-specific replacement for JSFunctionSpec.
  *
diff --git a/src/js/spidermonkey.cpp b/src/js/spidermonkey.cpp
index 7df989687..eef199156 100644
--- a/src/js/spidermonkey.cpp
+++ b/src/js/spidermonkey.cpp
@@ -160,8 +160,9 @@ spidermonkey_init(struct module *module)
 static void
 spidermonkey_done(struct module *xxx)
 {
-	if (js_module_init_ok)
-		spidermonkey_runtime_release();
+	if (js_module_init_ok) {
+		spidermonkey_release_all_runtimes();
+	}
 }
 
 static const char *