diff --git a/src/diagrams/flowchart/flowRenderer.js b/src/diagrams/flowchart/flowRenderer.js
index 3fb9a31f5f1..1812d643444 100644
--- a/src/diagrams/flowchart/flowRenderer.js
+++ b/src/diagrams/flowchart/flowRenderer.js
@@ -79,6 +79,7 @@ export const addVertices = function (vert, g, svgId) {
         tspan.setAttribute('dy', '1em')
         tspan.setAttribute('x', '1')
         tspan.textContent = rows[j]
+        tspan.setAttribute('fill', '#333')
         svgLabel.appendChild(tspan)
       }
       vertexNode = svgLabel