diff --git a/bindings/java/src/jni/win32/metabase.cpp b/bindings/java/src/jni/win32/metabase.cpp
index aa631999..0cace464 100644
--- a/bindings/java/src/jni/win32/metabase.cpp
+++ b/bindings/java/src/jni/win32/metabase.cpp
@@ -1,4 +1,4 @@
-#ifdef WIN32
+#if defined(WIN32) && !defined(SIGAR_NO_ATL)
 #define UNICODE
 #define _UNICODE
 #define _WIN32_DCOM