diff --git a/modules/shared_state.py b/modules/shared_state.py
index db20b76395f..f74eafc5895 100644
--- a/modules/shared_state.py
+++ b/modules/shared_state.py
@@ -162,5 +162,7 @@ def do_set_current_image(self):
             errors.record_exception()
 
     def assign_current_image(self, image):
+        if shared.opts.live_previews_image_format == 'jpeg' and image.mode == 'RGBA':
+            image = image.convert('RGB')
         self.current_image = image
         self.id_live_preview += 1