diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index f6c364239..986a74f7f 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -126,7 +126,7 @@ if(WIN32)
 endif()
 
 target_include_directories(${LIB_NAME} INTERFACE
-  $<INSTALL_INTERFACE:include>
+  $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
   $<BUILD_INTERFACE:${CURL_SOURCE_DIR}/include>)
 
 install(TARGETS ${LIB_NAME}