diff --git a/converters/ish/files/patch-ab b/converters/ish/files/patch-ab
new file mode 100644
index 000000000000..a1ef9a0b20bb
--- /dev/null
+++ b/converters/ish/files/patch-ab
@@ -0,0 +1,28 @@
+--- ish.c.orig	Sun Aug  5 20:04:08 1990
++++ ish.c	Fri Mar 29 15:18:25 2002
+@@ -48,7 +48,7 @@
+ long lsize;
+ char *filename = "file.ish";
+ 
+-FILE *opath = stdout;
++FILE *opath = NULL;
+ FILE *ipath;
+ char name[NAMLEN];
+ 
+@@ -61,7 +61,7 @@
+ static int ishargc=0;
+ static char *ishargv[32];
+ 
+-void main(argc, argv)
++int main(argc, argv)
+ int argc;
+ char **argv;
+ {
+@@ -69,6 +69,7 @@
+     char *p;
+     FILE *fopen();
+ 
++    opath = stdout;
+     if (argc < 2)
+ 	help();
+     while(--argc > 0) {