diff --git a/ext_libs/ext_libs.cmake b/ext_libs/ext_libs.cmake
index e03de86..073db1c 100644
--- a/ext_libs/ext_libs.cmake
+++ b/ext_libs/ext_libs.cmake
@@ -37,8 +37,6 @@ endif()
 if(RAPIDJSON_SYS_DEP)
   # Since EXACT is not specified, any version compatible with 1.1.0 is accepted (>= 1.1.0)
   find_package(RapidJSON 1.1.0 CONFIG REQUIRED)
-  add_library(RapidJSON INTERFACE)
-  target_include_directories(RapidJSON INTERFACE ${RapidJSON_INCLUDE_DIRS} ${RAPIDJSON_INCLUDE_DIRS})
 else()
   add_library(RapidJSON INTERFACE)
   target_include_directories(RapidJSON SYSTEM INTERFACE "${CMAKE_CURRENT_LIST_DIR}/rapidjson/include")
@@ -101,8 +99,7 @@ endif()
 if(VW_EIGEN_SYS_DEP)
   # Since EXACT is not specified, any version compatible with 3.4.0 is accepted (>= 3.4.0)
   find_package(Eigen3 3.4.0 CONFIG REQUIRED)
-  add_library(eigen INTERFACE)
-  target_include_directories(eigen INTERFACE ${EIGEN3_INCLUDE_DIR})
+  add_library(eigen ALIAS Eigen3::Eigen)
 else()
   if(NOT EXISTS ${CMAKE_CURRENT_LIST_DIR}/eigen/CMakeLists.txt)
   message(SEND_ERROR "The eigen git submodule is not available.\