diff --git a/CMakeLists.txt b/CMakeLists.txt
index 895f97b8c3..416afc227a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -585,7 +585,6 @@ if(LZO_FOUND)
 else()
   message(STATUS "Using static lzo from Externals")
   add_subdirectory(Externals/LZO)
-  include_directories(Externals/LZO)
   set(LZO lzo2)
 endif()
 
diff --git a/Externals/LZO/CMakeLists.txt b/Externals/LZO/CMakeLists.txt
index 78f58eff2a..48d1af1b1e 100644
--- a/Externals/LZO/CMakeLists.txt
+++ b/Externals/LZO/CMakeLists.txt
@@ -1 +1,8 @@
-add_library(lzo2 STATIC minilzo.c)
+add_library(lzo2 STATIC
+  minilzo.c
+)
+
+target_include_directories(lzo2
+PUBLIC
+  ${CMAKE_CURRENT_SOURCE_DIR}
+)