diff --git a/advanced/upf.rst b/advanced/upf.rst
index 619271f..e1cc182 100644
--- a/advanced/upf.rst
+++ b/advanced/upf.rst
@@ -49,7 +49,7 @@
 
 In SD-Fabric we support different topologies to meet the requirements of
 different deployment sizes: from a single rack with just one leaf
-switch, or a paired-leaves for redundancy, to NxM leaf-spine fabric for multi-rack
+switch, or a paired-leaves for redundancy, to N x M leaf-spine fabric for multi-rack
 deployments. For this reason, P4-UPF is realized with a "distributed" data plane
 implementation where all leaf switches are programmed with the same UPF
 rules, such that any leaf can terminate any GTP-U tunnel. This provides several
diff --git a/dict.txt b/dict.txt
index 661dec5..82785d3 100644
--- a/dict.txt
+++ b/dict.txt
@@ -16,7 +16,6 @@
 Multicast
 Netburg
 Netlink
-NxM
 ONF
 ONIE
 OpenConfig