diff --git a/Lib/fontParts/base/glyph.py b/Lib/fontParts/base/glyph.py
index 3414dbd0..0f67ea66 100644
--- a/Lib/fontParts/base/glyph.py
+++ b/Lib/fontParts/base/glyph.py
@@ -1465,6 +1465,7 @@ def round(self):
         - components
         - anchors
         - guidelines
+        - image
         """
         self._round()
 
@@ -1480,6 +1481,8 @@ def _round(self):
             anchor.round()
         for guideline in self.guidelines:
             guideline.round()
+        if self.image.data is not None:
+            image.round()
         self.width = normalizers.normalizeVisualRounding(self.width)
         self.height = normalizers.normalizeVisualRounding(self.height)