1 files changed, 1 insertions, 1 deletions
diff --git a/picture.go b/picture.go
index f8133ca..8e2fa12 100644
--- a/picture.go
+++ b/picture.go
@@ -366,7 +366,7 @@ func (f *File) addMedia(file []byte, ext string) string {
 // setContentTypePartImageExtensions provides a function to set the content
 // type for relationship parts and the Main Document part.
 func (f *File) setContentTypePartImageExtensions() {
-	imageTypes := map[string]string{"jpeg": "image/", "png": "image/", "gif": "image/", "tiff": "image/", "emf": "image/x-"}
+	imageTypes := map[string]string{"jpeg": "image/", "png": "image/", "gif": "image/", "tiff": "image/", "emf": "image/x-", "wmf": "image/x-"}
 	content := f.contentTypesReader()
 	content.Lock()
 	defer content.Unlock()