diff --git a/.gitignore b/.gitignore
index eefe373..eac68d9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -161,3 +161,5 @@ r2modman/
 r2modmanPlus-local/
 goa-1.0/
 keepassxc/
+r2modman/
+r2modmanPlus-local/
diff --git a/groff/math.tmac b/groff/math.tmac
index 2a34ca7..4430c97 100644
--- a/groff/math.tmac
+++ b/groff/math.tmac
@@ -19,11 +19,11 @@ define ok '{ \[OK] }'
 define in '{ \[mo] }'
 define deg '{ \[de] }'
 define and '{ \[AN] }'
-define div '{ \[di] }'
 define grad '{ \[gr] }'
 define aleph '{ \[Ah] }'
 define forall '{ \[fa] }'
 define rot 'roman "rot"'
+define div 'roman "div"'
 define sen 'roman "sen"'
 define tan 'roman "tan"'
 define sec 'roman "sec"'