diff --git a/doc/rg.1 b/doc/rg.1
index 06325661..0df63968 100644
--- a/doc/rg.1
+++ b/doc/rg.1
@@ -272,11 +272,15 @@ Show all supported file types and their associated globs.
 .TP
 .B \-\-type\-add \f[I]ARG\f[] ...
 Add a new glob for a particular file type.
+Only one glob can be added at a time.
+Multiple \-\-type\-add flags can be provided.
+Unless \-\-type\-clear is used, globs are added to any existing globs
+inside of ripgrep.
 Note that this must be passed to every invocation of rg.
 .RS
 .RE
 .PP
-Example: \-\-type\-add html:\f[I]\&.html,\f[].htm
+Example: \f[C]\-\-type\-add\ html:*.html\f[]
 .TP
 .B \-\-type\-clear \f[I]TYPE\f[] ...
 Clear the file type globs previously defined for TYPE.
diff --git a/doc/rg.1.md b/doc/rg.1.md
index b9f68968..139582c3 100644
--- a/doc/rg.1.md
+++ b/doc/rg.1.md
@@ -176,10 +176,12 @@ the raw speed of grep.
 : Show all supported file types and their associated globs.
 
 --type-add *ARG* ...
-: Add a new glob for a particular file type. Note that this must be
-  passed to every invocation of rg.
+: Add a new glob for a particular file type. Only one glob can be added
+  at a time. Multiple --type-add flags can be provided. Unless --type-clear
+  is used, globs are added to any existing globs inside of ripgrep. Note that
+  this must be passed to every invocation of rg.
 
-  Example: --type-add html:*.html,*.htm
+  Example: `--type-add html:*.html`
 
 --type-clear *TYPE* ...
 : Clear the file type globs previously defined for TYPE. This only clears
diff --git a/src/args.rs b/src/args.rs
index 921fde43..77c72cef 100644
--- a/src/args.rs
+++ b/src/args.rs
@@ -175,10 +175,12 @@ File type management options:
         Show all supported file types and their associated globs.
 
     --type-add ARG ...
-        Add a new glob for a particular file type. Note that this must be
-        passed to every invocation of rg.
+        Add a new glob for a particular file type. Only one glob can be
+        added at a time. Multiple --type-add flags can be provided. Unless
+        --type-clear is used, globs are added to any existing globs inside of
+        ripgrep. Note that this must be passed to every invocation of rg.
 
-        Example: --type-add html:*.html,*.htm
+        Example: `--type-add html:*.html`
 
     --type-clear TYPE ...
         Clear the file type globs previously defined for TYPE. This only clears