X-Git-Url: https://wimlib.net/git/?a=blobdiff_plain;f=src%2Fexport_image.c;h=8ad2d533644f86c0ba73ad5f3fd8f4105cbf740a;hb=ab63d9f11eae3b930f0f75fe0edb6b6df1cdb280;hp=e88107a96030f6cae0aa646d48bc5dc673361f99;hpb=be5acf31aa8292dcd4a2829492faefb0b200d28f;p=wimlib

diff --git a/src/export_image.c b/src/export_image.c
index e88107a9..8ad2d533 100644
--- a/src/export_image.c
+++ b/src/export_image.c
@@ -128,7 +128,7 @@ wimlib_export_image(WIMStruct *src_wim,
 			     WIMLIB_EXPORT_FLAG_WIMBOOT))
 		return WIMLIB_ERR_INVALID_PARAM;
 
-	if (src_wim == NULL || dest_wim == NULL)
+	if (!src_wim || !dest_wim || src_wim == dest_wim)
 		return WIMLIB_ERR_INVALID_PARAM;
 
 	if (!wim_has_metadata(src_wim) || !wim_has_metadata(dest_wim))