diff --git a/firmware/Makefile b/firmware/Makefile
index 6d5c3ab..1c00d05 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -69,7 +69,8 @@
 fw-shipped-$(CONFIG_MYRI_SBUS) += myricom/lanai.bin
 fw-shipped-$(CONFIG_PCMCIA_PCNET) += cis/LA-PCM.cis cis/PCMLM28.cis \
 				     cis/DP83903.cis cis/NE2K.cis \
-				     cis/tamarack.cis cis/PE-200.cis
+				     cis/tamarack.cis cis/PE-200.cis \
+				     cis/PE520.cis
 fw-shipped-$(CONFIG_PCMCIA_3C589) += cis/3CXEM556.cis
 fw-shipped-$(CONFIG_PCMCIA_3C574) += cis/3CCFEM556.cis
 fw-shipped-$(CONFIG_SERIAL_8250_CS) += cis/MT5634ZLX.cis cis/RS-COM-2P.cis \
diff --git a/firmware/WHENCE b/firmware/WHENCE
index 34b5d0a..ac174fe 100644
--- a/firmware/WHENCE
+++ b/firmware/WHENCE
@@ -601,6 +601,7 @@
       cis/NE2K.cis
       cis/tamarack.cis
       cis/PE-200.cis
+      cis/PE520.cis
 
 Licence: GPL
 
diff --git a/firmware/cis/PE520.cis.ihex b/firmware/cis/PE520.cis.ihex
new file mode 100644
index 0000000..97a745b
--- /dev/null
+++ b/firmware/cis/PE520.cis.ihex
@@ -0,0 +1,9 @@
+:1000000001030000FF152304014B544900504535FE
+:10001000323020504C55530050434D434941204508
+:10002000746865726E65740000FF20046101100041
+:10003000210206001A050101D00F0B1B09C101198D
+:0A00400001556530FFFF1400FF00BA
+:00000001FF
+#
+# Replacement CIS for PE520 ethernet card
+#