diff --git a/src/ol/layer/WebGLTile.js b/src/ol/layer/WebGLTile.js
index 820f42dbbd..b6ad0b75b2 100644
--- a/src/ol/layer/WebGLTile.js
+++ b/src/ol/layer/WebGLTile.js
@@ -224,7 +224,9 @@ function parseStyle(style, bandCount) {
         discard;
       }
 
-      gl_FragColor = color * ${Uniforms.TRANSITION_ALPHA};
+      gl_FragColor = color;
+      gl_FragColor.rgb *= gl_FragColor.a;
+      gl_FragColor *= ${Uniforms.TRANSITION_ALPHA};
     }`;
 
   return {