diff --git a/1989/fubar/fubar.c b/1989/fubar/fubar.c
index 34ac78bdf..38d8a7621 100644
--- a/1989/fubar/fubar.c
+++ b/1989/fubar/fubar.c
@@ -9,12 +9,12 @@
 if(m && q=='T' && o=='T'){m=0;(void)fread(tt,11,1,stdin);(void)printf("T %9d\n",atoi(tt)*QQ);}else {q=o;(void)putchar(o);}}exit(0);}
 cc ouroboros.c -o x 
 #define zxc ;{/*
-cat ./ouroboros.c | ./x $1 > x1
+cat ouroboros.c | ./x $1 > x1
 if [[ $? -ne 0 ]]; then
 exit
 fi
-mv x1 ./ouroboros.c
-chmod +x ./ouroboros.c
+mv x1 ouroboros.c
+chmod +x ouroboros.c
 exec ./ouroboros.c $1
 exit
 */
diff --git a/1989/fubar/fubar.sh b/1989/fubar/fubar.sh
index 816a1147d..74929c5ea 100755
--- a/1989/fubar/fubar.sh
+++ b/1989/fubar/fubar.sh
@@ -9,8 +9,7 @@ fi
 
 # run/compile it
 rm -f ouroboros.c x1 x
-ex - <<EOF
-r fubar.c
+ex fubar.c <<EOF
 8,9j
 w ouroboros.c
 EOF
diff --git a/thanks-for-help.md b/thanks-for-help.md
index 3bb0db57f..106076839 100644
--- a/thanks-for-help.md
+++ b/thanks-for-help.md
@@ -758,6 +758,27 @@ not strictly necessary but nonetheless more correct, even if not warned against.
 `$PATH`) to files referred to in the code. The path problem was also fixed in
 [fubar.sh](/1989/fubar/fubar.sh).
 
+A strange problem occurred where if one made modifications to the C file it
+might end up failing to work even after changing it back. This was resolved by:
+
+```diff
+--- i/1989/fubar/fubar.sh
++++ w/1989/fubar/fubar.sh
+@@ -7,13 +7,12 @@ if [[ $# -ne 1 ]]; then
+     exit 1
+ fi
+ 
+ # run/compile it
+ rm -f ouroboros.c x1 x
+-ex - <<EOF
+-r fubar.c
++ex fubar.c <<EOF
+ 8,9j
+ w ouroboros.c
+ EOF
+ chmod +x ouroboros.c
+```
+
 Cody also 'modernised' the script to use `bash` and fixed for ShellCheck. The
 `if [ .. ]` was changed in the C code as well as the script.