diff --git a/contrib/minizip/iowin32.c b/contrib/minizip/iowin32.c
index 274f39eb1..9736fbb0f 100644
--- a/contrib/minizip/iowin32.c
+++ b/contrib/minizip/iowin32.c
@@ -27,7 +27,7 @@
 
 
 // see Include/shared/winapifamily.h in the Windows Kit
-#if defined(WINAPI_FAMILY_PARTITION) && (!(defined(IOWIN32_USING_WINRT_API)))
+#if defined(WINAPI_FAMILY_ONE_PARTITION) && (!(defined(IOWIN32_USING_WINRT_API)))
 #if WINAPI_FAMILY_ONE_PARTITION(WINAPI_FAMILY, WINAPI_PARTITION_APP)
 #define IOWIN32_USING_WINRT_API 1
 #endif