diff --git a/bin/pfd2png.sh b/bin/pfd2png.sh
index 280690414..957ddc620 100755
--- a/bin/pfd2png.sh
+++ b/bin/pfd2png.sh
@@ -1,2 +1,2 @@
 #!/bin/sh
-pstoimg -density 200 -antialias -flip cw $@
+pstoimg -density 200 -antialias -type png -flip cw $@