diff --git a/src/imageformats/CMakeLists.txt b/src/imageformats/CMakeLists.txt
index a8221e8..202681e 100644
--- a/src/imageformats/CMakeLists.txt
+++ b/src/imageformats/CMakeLists.txt
@@ -166,7 +166,9 @@ if (LibJXR_FOUND)
     kde_enable_exceptions()
     target_include_directories(kimg_jxr PRIVATE ${LIBJXR_INCLUDE_DIRS})
     target_link_libraries(kimg_jxr PRIVATE ${LIBJXR_LIBRARIES})
-    target_compile_definitions(kimg_jxr PRIVATE INITGUID)
+    if(NOT MSVC)
+        target_compile_definitions(kimg_jxr PRIVATE __ANSI__)
+    endif()
     if (NOT CMAKE_SYSTEM_NAME STREQUAL "Windows")
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-error=undef")
         set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-error=undef")