diff --git a/cameo/templates/mkmk-simple b/cameo/templates/mkmk-simple
index 3e702a8..177f554 100755
--- a/cameo/templates/mkmk-simple
+++ b/cameo/templates/mkmk-simple
@@ -42,6 +42,18 @@ if [ "$ROT" ]; then
     rot="rotate $ROT"
 fi
 
+edges=
+for n in PCB_Edges.gbr Edge_Cuts.gbr Edge_Cuts.pho; do
+    if [ -r "../$NAME-$n" ]; then
+	edges=../$NAME-$n
+	break
+    fi
+done
+if [ ! "$edges" ]; then
+    echo "no edges file found" 1>&2
+    exit 1
+fi
+
 write=write
 yi=0
 while [ $yi -lt $YN ]; do
@@ -51,7 +63,7 @@ while [ $yi -lt $YN ]; do
 	cameo <<EOF || exit
 mm
 
-gerber 35mil ../$NAME-PCB_Edges.gbr
+gerber 35mil $edges
 $rot
 align 1 $X0 $Y0		# align relative to board corner
 translate 4mm 4mm	# move to PCB zone assigned to project
@@ -75,7 +87,7 @@ $write mill.gp
 remainder
 empty
 
-gerber $MILL_OUT ../$NAME-PCB_Edges.gbr
+gerber $MILL_OUT $edges
 offset
 append mill.gp
 EOF