Spring support gives Red alert on valid PropertyPlaceholderConfigurer's pt

I have the following code snippet in a Spring context file and IDEA 7860 gives me an error alert on the property usage: $ It works fine though and its seems proper to me. <bean id="propertyConfigurer" > <property name="properties"> <value>EMAIL_PORT_OVERRIDE=2500</value> </property> <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_FALLBACK"/> </bean> <bean id="mailSender" > <property name="host" value="localhost"/> <property name="port" value="$"/>
</bean>