diff --git a/avr/modules/comproto/addr.asm b/avr/modules/comproto/addr.asm
index faee3ea..4ec1424 100644
--- a/avr/modules/comproto/addr.asm
+++ b/avr/modules/comproto/addr.asm
@@ -47,7 +47,7 @@
 ; procedure.
 ;
 ; 1) a node sends the packet CLAIM_ADDRESS with the previously assigned address
-; 2) is any other node objects to this node using that address (e.g. because the other
+; 2) if any other node objects to this node using that address (e.g. because the other
 ;    node now uses that address) that node will send a DENY_ADDRESS packet.
 ; 3) if no DENY_ADDRESS has been received within 10s the address can be used.
 ; 4) Otherwise the node changes into protocol A (see above).