diff --git a/README.md b/README.md
index a69f5a2..94c5d79 100644
--- a/README.md
+++ b/README.md
@@ -33,9 +33,11 @@ I plan to update the syntax when and if the spec adds more items to *text/gemini
 
 ## Filetype
 
-This syntax is set up to be used with files labled with the **gmi** extension. For example:
+This syntax is set up to be used with files labled with the **gmi** or **gemini** extensions. For example:
 ```
 $ vim my_gemini_map.gmi
+# or
+$ vim my_gemini_map.gemini
 ```
 
 ## Surprises
diff --git a/ftdetect/gmi.vim b/ftdetect/gmi.vim
index 2040f0c..ee6e1fc 100644
--- a/ftdetect/gmi.vim
+++ b/ftdetect/gmi.vim
@@ -1,2 +1,3 @@
-au BufRead,BufNewFile *.gmi set filetype=gmi
+au BufRead,BufNewFile *.gmi,*.gemini set filetype=gmi
 " Gemini protocol syntax for text/gemini files (*.gmi)
+" will also work for *.gemini files