diff --git a/CMakeLists.txt b/CMakeLists.txt
index e7339f5..da5baee 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -50,8 +50,8 @@ add_library(Olm::Olm ALIAS olm)
 
 target_include_directories(olm
     PUBLIC
-        $<BUILD_INTERFACE:${CMAKE_SOURCE_DIR}/include>
-        $<INSTALL_INTERFACE:include>
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
     PRIVATE
         ${CMAKE_CURRENT_SOURCE_DIR}/lib)