diff --git a/src/packetstream.c b/src/packetstream.c
index 4d57942c..fbb417cb 100644
--- a/src/packetstream.c
+++ b/src/packetstream.c
@@ -33,6 +33,7 @@ void tf_packetstream_destroy(tf_packetstream_t* stream)
 	{
 		tf_free(stream->buffer);
 		stream->buffer = NULL;
+		stream->buffer_size = 0;
 	}
 	if (stream->stream.data)
 	{
diff --git a/src/serialize.c b/src/serialize.c
index 65d06860..54e189f6 100644
--- a/src/serialize.c
+++ b/src/serialize.c
@@ -173,23 +173,16 @@ static bool _serialize_storeInternal(tf_task_t* task, tf_taskstub_t* to, buffer_
 	else if (JS_IsNumber(value))
 	{
 		int64_t result = 0;
-		if (JS_ToInt64(context, &result, value) == 0)
+		double float_result = 0.0;
+		if (JS_VALUE_GET_TAG(value) == JS_TAG_INT && JS_ToInt64(context, &result, value) == 0)
 		{
 			_serialize_writeInt32(buffer, kInt64);
 			_serialize_writeInt64(buffer, result);
 		}
-		else
-		{
-			fprintf(stderr, "Unable to store integer.\n");
-		}
-	}
-	else if (JS_IsNumber(value))
-	{
-		double result = 0.0;
-		if (JS_ToFloat64(context, &result, value) == 0)
+		else if (JS_ToFloat64(context, &float_result, value) == 0)
 		{
 			_serialize_writeInt32(buffer, kNumber);
-			_serialize_writeDouble(buffer, result);
+			_serialize_writeDouble(buffer, float_result);
 		}
 		else
 		{
diff --git a/src/tests.c b/src/tests.c
index eaa96d57..5ad9900b 100644
--- a/src/tests.c
+++ b/src/tests.c
@@ -438,6 +438,52 @@ static void _test_uint8array(const tf_test_options_t* options)
 	unlink("out/child.js");
 }
 
+static void _test_float(const tf_test_options_t* options)
+{
+	FILE* file = fopen("out/test.js", "w");
+	fprintf(file,
+		"var task = new Task();\n"
+		"task.onExit = function() {\n"
+		"	print('child exited');\n"
+		"};\n"
+		"task.activate();\n"
+		"File.readFile('out/child.js').then(function(data) {\n"
+		"	task.execute({name: 'child.js', source: utf8Decode(data)}).then(async function() {\n"
+		"		print('get exports');\n"
+		"		let test = (await task.getExports()).test;\n"
+		"		print('calling export');\n"
+		"		let result = await test(1.2);\n"
+		"		print(result);\n"
+		"		exit(result == 1.2 ? 0 : 1);\n"
+		"	});\n"
+		"});");
+	fclose(file);
+
+	file = fopen("out/child.js", "w");
+	fprintf(file,
+		"print(\"child\");\n"
+		"exports = {\n"
+		"	test: function(value) {\n"
+		"		print(value);\n"
+		"		return value;\n"
+		"	}\n"
+		"};\n"
+		"print(\"child ready\");\n"
+		);
+	fclose(file);
+
+	char command[256];
+	snprintf(command, sizeof(command), "%s run --ssb-port=0 --db-path=:memory: -s out/test.js", options->exe_path);
+	tf_printf("%s\n", command);
+	int result = system(command);
+	(void)result;
+	assert(WIFEXITED(result));
+	assert(WEXITSTATUS(result) == 0);
+
+	unlink("out/test.js");
+	unlink("out/child.js");
+}
+
 static void _test_socket(const tf_test_options_t* options)
 {
 	FILE* file = fopen("out/test.js", "w");
@@ -664,6 +710,7 @@ void tf_tests(const tf_test_options_t* options)
 	_tf_test_run(options, "exit", _test_exit);
 	_tf_test_run(options, "icu", _test_icu);
 	_tf_test_run(options, "uint8array", _test_uint8array);
+	_tf_test_run(options, "float", _test_float);
 	_tf_test_run(options, "socket", _test_socket);
 	_tf_test_run(options, "file", _test_file);
 	_tf_test_run(options, "sign", _test_sign);