diff --git a/cmake/WebPConfig.cmake.in b/cmake/WebPConfig.cmake.in
index 8c883fe1..a0d721f3 100644
--- a/cmake/WebPConfig.cmake.in
+++ b/cmake/WebPConfig.cmake.in
@@ -11,7 +11,8 @@ endif()
 include("${CMAKE_CURRENT_LIST_DIR}/@PROJECT_NAME@Targets.cmake")
 
 set_and_check(WebP_INCLUDE_DIR "@PACKAGE_CMAKE_INSTALL_INCLUDEDIR@")
-set(WEBP_INCLUDE_DIRS ${WebP_INCLUDE_DIRS})
+set(WebP_INCLUDE_DIRS ${WebP_INCLUDE_DIR})
+set(WEBP_INCLUDE_DIRS ${WebP_INCLUDE_DIR})
 set(WebP_LIBRARIES "@INSTALLED_LIBRARIES@")
 set(WEBP_LIBRARIES "${WebP_LIBRARIES}")