diff --git a/library/intel.dcm b/library/intel.dcm
index 12c6f476..d52dddd9 100644
--- a/library/intel.dcm
+++ b/library/intel.dcm
@@ -72,13 +72,13 @@ $ENDCMP
 $CMP 8255
 D 8255 Programmable Peripheral Interface, PDIP-40
 K 8255 PPI
-F http://www.datasheet.hk/view_online.php?id=1135008&file=0005\8255a_38897.pdf
+F http://aturing.umcs.maine.edu/~meadow/courses/cos335/Intel8255A.pdf
 $ENDCMP
 #
 $CMP 8255A
 D 8255 Programmable Peripheral Interface, PDIP-40
 K 8255 PPI
-F http://www.datasheet.hk/view_online.php?id=1135008&file=0005\8255a_38897.pdf
+F http://aturing.umcs.maine.edu/~meadow/courses/cos335/Intel8255A.pdf
 $ENDCMP
 #
 $CMP 8259