diff --git a/lib/docker/image.rb b/lib/docker/image.rb
index 3d5619f54..de189d767 100644
--- a/lib/docker/image.rb
+++ b/lib/docker/image.rb
@@ -138,8 +138,8 @@ def remove(id, opts = {}, conn = Docker.connection)
     alias_method :delete, :remove
 
     # Prune images
-    def prune(conn = Docker.connection)
-      conn.post("/images/prune", {})
+    def prune(opts = {}, conn = Docker.connection)
+      conn.post("/images/prune", opts)
     end