diff --git a/CMakeLists.txt b/CMakeLists.txt
index e275fd60..e99dd28d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -260,11 +260,11 @@ INSTALL (TARGETS ${MSGPACK_INSTALLTARGETS} EXPORT msgpack-c-targets
 )
 FOREACH (file ${msgpack-c_common_HEADERS})
     GET_FILENAME_COMPONENT (dir ${file} PATH)
-    INSTALL (FILES ${file} DESTINATION ${CMAKE_INSTALL_PREFIX}/${dir})
+    INSTALL (FILES ${file} DESTINATION ${dir})
 ENDFOREACH ()
 FOREACH (file ${msgpack-c_configured_HEADERS})
     GET_FILENAME_COMPONENT (dir ${file} PATH)
-    INSTALL (FILES ${CMAKE_CURRENT_BINARY_DIR}/${file} DESTINATION ${CMAKE_INSTALL_PREFIX}/${dir})
+    INSTALL (FILES ${CMAKE_CURRENT_BINARY_DIR}/${file} DESTINATION ${dir})
 ENDFOREACH ()
 IF (NOT MSVC)
     INSTALL (FILES ${CMAKE_CURRENT_BINARY_DIR}/msgpack-c.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)