diff --git a/include/fcl/CMakeLists.txt b/include/fcl/CMakeLists.txt
index 723bd6d0089847e36bec320cead75eb30b992324..052e7526f390fbf7318f6bc14906ac7c00c16507 100644
--- a/include/fcl/CMakeLists.txt
+++ b/include/fcl/CMakeLists.txt
@@ -1,5 +1,5 @@
-file(GLOB_RECURSE HEADERS            ${CMAKE_CURRENT_SOURCE_DIR}/*.h)
-file(GLOB_RECURSE CONFIGURED_HEADERS ${CMAKE_CURRENT_BINARY_DIR}/*.h)
+file(GLOB_RECURSE HEADERS            ${CMAKE_CURRENT_SOURCE_DIR}/*.h ${CMAKE_CURRENT_SOURCE_DIR}/*.hxx)
+file(GLOB_RECURSE CONFIGURED_HEADERS ${CMAKE_CURRENT_BINARY_DIR}/*.h ${CMAKE_CURRENT_BINARY_DIR}/*.hxx)
 set(FCL_HEADERS ${HEADERS} ${CONFIGURED_HEADERS} PARENT_SCOPE)
 
 file(TO_NATIVE_PATH "${CMAKE_CURRENT_SOURCE_DIR}" FCL_CONFIG_IN_DIR)