diff --git a/tcpdump.spec b/tcpdump.spec
index 715b047..17877fd 100644
--- a/tcpdump.spec
+++ b/tcpdump.spec
@@ -43,7 +43,7 @@ ethernet. It can be used to debug specific network problems.
 %patch0 -p1
 
 %build
-# guessing TCO needed in print-ip.c
+# guessing TSO needed in print-ip.c
 export CFLAGS="%{optflags} -DGUESS_TSO"
 %configure \
   --enable-ipv6