diff --git a/src/EditorView.swift b/src/EditorView.swift
index 0c6bc0d..07cdec2 100644
--- a/src/EditorView.swift
+++ b/src/EditorView.swift
@@ -452,7 +452,7 @@ class LineNumberRulerView: NSRulerView {
             lineRect.origin.y += tv.textContainerInset.height - visibleRect.origin.y
 
             if let result = evalResults[lineNumber - 1] {
-                let resultStr = NSAttributedString(string: result, attributes: resultAttrs)
+                let resultStr = NSAttributedString(string: "→ \(result)", attributes: resultAttrs)
                 let resultSize = resultStr.size()
                 let resultPoint = NSPoint(
                     x: ruleThickness - resultSize.width - 4,