diff --git a/doc/Android_code_signing.adoc b/doc/Android_code_signing.adoc
index 067cf29..80fefbb 100644
--- a/doc/Android_code_signing.adoc
+++ b/doc/Android_code_signing.adoc
@@ -17,45 +17,57 @@ Steps
 
 1. Import the key and cert, do one of the below:
 a. Import the key and cert (PEM format) in slot 9a:
-
++
+----
   $ yubico-piv-tool -s 9a -a import-key -i key.pem
   $ yubico-piv-tool -s 9a -a import-certificate -i cert.pem
+----
 
 b. Import the key and cert (PKCS12 format) in slot 9a:
-
++
+----
   $ yubico-piv-tool -s 9a -a import-key -a import-cert -i key.p12 -K PKCS12
+----
 
 2. Create a java pkcs11 configuration file:
-
++
+----
   cat > /tmp/pkcs11_java.cfg
   name = OpenSC-PKCS11
   description = SunPKCS11 via OpenSC
   library = /usr/lib/x86_64-linux-gnu/opensc-pkcs11.so
   slotListIndex = 1
+----
 
 3. Check that keytool can see the key:
-
++
+----
   $ keytool -providerClass sun.security.pkcs11.SunPKCS11 -providerArg /tmp/pkcs11_java.cfg \
     -keystore NONE -storetype PKCS11 -list
   Enter keystore password:
-+
+
   Keystore type: PKCS11
   Keystore provider: SunPKCS11-OpenSC-PKCS11
-+
+
   Your keystore contains 1 entry
-+
+
   Certificate for PIV Authentication, PrivateKeyEntry,
   Certificate fingerprint (SHA1): 26:D7:CB:71:6D:42:3C:AB:58:69:E0:9D:F0:16:DF:84:7E:1C:5A:9A
+----
 +
 Password here is the PIN of the key (default 123456).
 
 4. Sign the apk with jarsigner:
-
++
+----
   $ jarsigner -providerClass sun.security.pkcs11.SunPKCS11 -providerArg /tmp/pkcs11_java.cfg \
     -keystore NONE -storetype PKCS11 app.apk "Certificate for PIV Authentication"
   Enter Passphrase for keystore: 
   jar signed.
+----
 
 5. Verify the signature with jarsigner:
-
++
+----
   $ jarsigner -verify app.apk
+----