diff --git a/rclcpp/CMakeLists.txt b/rclcpp/CMakeLists.txt
index de8e289..57ddc4a 100644
--- a/rclcpp/CMakeLists.txt
+++ b/rclcpp/CMakeLists.txt
@@ -43,7 +43,7 @@ set(${PROJECT_NAME}_SRCS
 )
 
 macro(target)
-  if(NOT "${target_suffix} " STREQUAL " ")
+  if(NOT target_suffix STREQUAL "")
     get_rcl_information("${rmw_implementation}" "rcl${target_suffix}")
   endif()
   add_library(${PROJECT_NAME}${target_suffix} SHARED
diff --git a/rclcpp/cmake/get_rclcpp_information.cmake b/rclcpp/cmake/get_rclcpp_information.cmake
index fff5371..41e69d1 100644
--- a/rclcpp/cmake/get_rclcpp_information.cmake
+++ b/rclcpp/cmake/get_rclcpp_information.cmake
@@ -29,7 +29,7 @@ macro(get_rclcpp_information rmw_implementation var_prefix)
   set(${var_prefix}_FOUND TRUE)
 
   # Get rcl using the existing macro
-  if(NOT "${target_suffix} " STREQUAL " ")
+  if(NOT target_suffix STREQUAL "")
     get_rcl_information("${rmw_implementation}" "rcl${target_suffix}")
   endif()