diff --git a/meta-ros2-humble/recipes-bbappends/rmf-ros2/rmf-websocket_2.1.2-1.bbappend b/meta-ros2-humble/recipes-bbappends/rmf-ros2/rmf-websocket_2.1.2-1.bbappend
index 630ba669a387f54120e8e43f3a993784e500e600..08209e002b4adb23db752d6247f83bfac58d3e01 100644
--- a/meta-ros2-humble/recipes-bbappends/rmf-ros2/rmf-websocket_2.1.2-1.bbappend
+++ b/meta-ros2-humble/recipes-bbappends/rmf-ros2/rmf-websocket_2.1.2-1.bbappend
@@ -4,4 +4,4 @@
 ROS_EXEC_DEPENDS:remove = "nlohmann-json"
 
 # websocketpp does not provide runtime components
-ROS_EXEC_DEPENDS:remove += "websocketpp"
+ROS_EXEC_DEPENDS:remove = "websocketpp"