diff --git a/kernel-developer-pgp-guide.md b/kernel-developer-pgp-guide.md
index c3cc1e9..74b075f 100644
--- a/kernel-developer-pgp-guide.md
+++ b/kernel-developer-pgp-guide.md
@@ -275,7 +275,7 @@ Paperkey should already be packaged for most distributions.
 
 Run the following command to create a hardcopy backup of your private key:
 
-    $ gpg --export-secret-key [fpr] | paperkey > /tmp/key-backup.txt
+    $ gpg --export-secret-key [fpr] | paperkey -o /tmp/key-backup.txt
 
 Print out that file (or pipe the output straight to lpr), then take a pen and
 write your passphrase on the margin of the paper. **This is strongly
diff --git a/protecting-code-integrity.md b/protecting-code-integrity.md
index 7e33235..5af106b 100644
--- a/protecting-code-integrity.md
+++ b/protecting-code-integrity.md
@@ -390,7 +390,7 @@ all Linux distros, as well as installable via `brew install paperkey` on Macs.
 Run the following command, replacing `[fpr]` with the full fingerprint of your
 key:
 
-    $ gpg --export-secret-key [fpr] | paperkey > /tmp/key-backup.txt
+    $ gpg --export-secret-key [fpr] | paperkey -o /tmp/key-backup.txt
 
 The output will be in a format that is easy to OCR or input by hand, should
 you ever need to recover it. Print out that file, then take a pen and write