diff --git a/CMakeLists.txt b/CMakeLists.txt
index 972b756f70..6a1a6f94ee 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -566,7 +566,6 @@ endif()
 if(NOT XXHASH_FOUND)
   message(STATUS "Using static xxhash from Externals")
   add_subdirectory(Externals/xxhash)
-  include_directories(Externals/xxhash)
 endif()
 
 find_package(ZLIB)
diff --git a/Externals/xxhash/CMakeLists.txt b/Externals/xxhash/CMakeLists.txt
index 475d2ca43a..8218f801d8 100644
--- a/Externals/xxhash/CMakeLists.txt
+++ b/Externals/xxhash/CMakeLists.txt
@@ -1,7 +1,7 @@
 project(xxhash C)
 
-set(SRCS
-	xxhash.c
+add_library(xxhash STATIC xxhash.c)
+target_include_directories(xxhash
+PUBLIC
+  ${CMAKE_CURRENT_SOURCE_DIR}
 )
-
-add_library(xxhash STATIC ${SRCS})