diff --git a/web/main.go b/web/main.go
index 3583925..5f0c862 100644
--- a/web/main.go
+++ b/web/main.go
@@ -42,6 +42,16 @@ type (
 	}
 )
 
+var mimeTypes = map[string]string {
+	".go":		"text/plain",
+	".rs":		"text/plain",
+	".c":		"text/plain",
+	".h":		"text/plain",
+	".cpp":		"text/plain",
+	".hpp":		"text/plain",
+	".java":	"text/plain",
+}
+
 //go:embed dir.html
 var dirTemplateSrc string
 var dirTemplate = template.Must(template.New("dir").Parse(dirTemplateSrc))
@@ -83,8 +93,12 @@ func Handler(app *AppState) http.HandlerFunc {
 
 			mimeType := "application/octet-stream"
 			extPos := strings.LastIndex(info.Name(), ".")
+			ext := string(info.Name()[strings.LastIndex(info.Name(), "."):])
+			fmt.Println(ext)
 			if extPos != -1 {
-				if m := mime.TypeByExtension(info.Name()[extPos:]); m != "" {
+				if m := mime.TypeByExtension(ext); m != "" {
+					mimeType = m
+				} else if m, ok := mimeTypes[ext]; ok {
 					mimeType = m
 				}
 			}