diff --git a/src/fl_read_image_mac.cxx b/src/fl_read_image_mac.cxx
index 06de2b018..e5e75ee4a 100644
--- a/src/fl_read_image_mac.cxx
+++ b/src/fl_read_image_mac.cxx
@@ -118,6 +118,7 @@ fl_read_image(uchar *p,		// I - Pixel buffer or NULL to allocate
   UnlockPixels(pm);
   fl_delete_offscreen(osbuffer);
 
+  SetPort(srcPort);
   return p;
 }