diff --git a/fs.go b/fs.go
index 4ef515c..5e2841c 100644
--- a/fs.go
+++ b/fs.go
@@ -13,12 +13,6 @@ import (
 	"strings"
 )
 
-func init() {
-	// Add Gemini mime types
-	mime.AddExtensionType(".gmi", "text/gemini")
-	mime.AddExtensionType(".gemini", "text/gemini")
-}
-
 // FileServer returns a handler that serves Gemini requests with the contents
 // of the provided file system.
 //
diff --git a/gemini.go b/gemini.go
index 6228526..bbe59ee 100644
--- a/gemini.go
+++ b/gemini.go
@@ -4,6 +4,12 @@ import (
 	"errors"
 )
 
+func init() {
+	// Add Gemini mime types
+	mime.AddExtensionType(".gmi", "text/gemini")
+	mime.AddExtensionType(".gemini", "text/gemini")
+}
+
 var crlf = []byte("\r\n")
 
 // Errors.