diff --git a/README.rst b/README.rst
index dbd28e1..a1c7442 100644
--- a/README.rst
+++ b/README.rst
@@ -221,6 +221,7 @@ Troubleshooting
 * **I don't get input from reader** or **WARNING: Communication failure, is the MFRC522 properly connected?**
 
   #. Check your connection, see `Pin Layout`_ .
+  #. Check your pin header soldering. Maybe you have cold solder joints.
   #. Check voltage. Most breakouts work with 3.3V.
   #. SPI only works with 3.3V, most breakouts seem 5V tollerant, but try a level shifter.
   #. SPI does not like long connections. Try shorter connections.