diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9fb9f4c51..9253646b6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -58,6 +58,7 @@ configure_package_config_file(
     ${NLOHMANN_JSON_CMAKE_CONFIG_TEMPLATE}
     ${NLOHMANN_JSON_CMAKE_PROJECT_CONFIG_FILE}
     INSTALL_DESTINATION ${NLOHMANN_JSON_CONFIG_INSTALL_DIR}
+    PATH_VARS NLOHMANN_JSON_HEADER_INSTALL_DIR
 )
 install(
     DIRECTORY ${NLOHMANN_JSON_SOURCE_DIR}
diff --git a/cmake/config.cmake.in b/cmake/config.cmake.in
index 3ea43afb8..b26fd6d72 100644
--- a/cmake/config.cmake.in
+++ b/cmake/config.cmake.in
@@ -1,4 +1,4 @@
 @PACKAGE_INIT@
-set_and_check(JSON_INCLUDE_DIR "@NLOHMANN_JSON_HEADER_INSTALL_DIR@")
+set_and_check(JSON_INCLUDE_DIR "@PACKAGE_NLOHMANN_JSON_HEADER_INSTALL_DIR@")
 include("${CMAKE_CURRENT_LIST_DIR}/@NLOHMANN_JSON_TARGETS_EXPORT_NAME@.cmake")
 check_required_components("@PROJECT_NAME@")