diff --git a/EXPLAINER.md b/EXPLAINER.md
index 2a3ef56..5169813 100644
--- a/EXPLAINER.md
+++ b/EXPLAINER.md
@@ -41,7 +41,7 @@ enum WebGLToneMappingMode {
 };
 
 dictionary WebGLToneMapping {
-  GLCanvasToneMappingMode mode = "standard";
+  WebGLToneMappingMode mode = "standard";
 };
 
 partial interface WebGLRenderingContextBase {