diff --git a/web/cashtab/scripts/addGenerated.sh b/web/cashtab/scripts/addGenerated.sh
index c48db964b..5dae05384 100755
--- a/web/cashtab/scripts/addGenerated.sh
+++ b/web/cashtab/scripts/addGenerated.sh
@@ -1,19 +1,28 @@
 #!/usr/bin/env bash
 
 export LC_ALL=C
 
-auto_add_generated_to_snapshots(){
-snapshot_file_array=() 
-snapshot_file_array+=$(find -name "*.test.js.snap")
-for i in $snapshot_file_array
-do
-if ! grep -q @generated $i
-then
-sed -i '1 s/$/ @generated/' $i
-fi
-done
-}
+set -euo pipefail
+
+# Build the generated marker without having this script being marked as
+# generated itself.
+AT=@
+AT_GENERATED="${AT}generated"
 
-auto_add_generated_to_snapshots
+TOPLEVEL=$(git rev-parse --show-toplevel)
 
-exit 0
\ No newline at end of file
+# Note that this won't work if the with files containing a space in their name.
+# This can be solved by using a null char delimiter (-d '\0') for read in
+# combination with find's option -print0 to get a compatible output, but this is
+# not supported by all find variants so we'll do without it for now.
+find "${TOPLEVEL}/web/cashtab/src" -name "*.test.js.snap" | while read i; do
+  # It is possible to avoid the grep and have sed do it all, but:
+  #  1. This is a more complex sed usage
+  #  2. It will add the generated mark in files that have it already on another
+  #     line.
+  if ! grep -q "${AT_GENERATED}" "${i}"; then
+    # The -i.bak option tells sed to do in-place replacement and create a backup
+    # file with a .bak suffix. This is mandatory for BSD/OSX compatibility.
+    sed -i.bak "1 s/$/ ${AT_GENERATED}/" "${i}" && rm -f "${i}.bak"
+  fi
+done