--- a/Image.st	Tue Feb 16 12:24:58 2016 +0100
+++ b/Image.st	Mon Feb 22 16:04:01 2016 +0100
@@ -5640,7 +5640,11 @@
         photometric := self class defaultPhotometric
         "/ photometric := anImage photometric
     ] ifFalse:[
-        photometric := photometricOrNil
+        photometricOrNil == #rgba ifTrue:[
+            samplesPerPixel == 3 ifTrue:[ photometric := #rgb ]
+        ] ifFalse:[
+            photometric := photometricOrNil
+        ].
     ].
 
     photometric == #palette ifTrue:[