diff --git a/specs/latest/1.0/index.html b/specs/latest/1.0/index.html
index 407f5318a..74dc700a4 100644
--- a/specs/latest/1.0/index.html
+++ b/specs/latest/1.0/index.html
@@ -1773,8 +1773,11 @@ <h3><a name="WEBGLRENDERINGCONTEXT">The WebGL context</a></h3>
     readonly attribute GLsizei drawingBufferWidth;
     readonly attribute GLsizei drawingBufferHeight;
     readonly attribute GLenum drawingBufferFormat;
-    attribute PredefinedColorSpace drawingBufferColorSpace = "srgb";
-    attribute PredefinedColorSpace unpackColorSpace = "srgb";
+
+    /* Upon context creation, drawingBufferColorSpace and unpackColorSpace both
+       default to the value "srgb". */
+    attribute PredefinedColorSpace drawingBufferColorSpace;
+    attribute PredefinedColorSpace unpackColorSpace;
 
     [WebGLHandlesContextLoss] WebGLContextAttributes? getContextAttributes();
     [WebGLHandlesContextLoss] boolean isContextLost();
diff --git a/specs/latest/1.0/webgl.idl b/specs/latest/1.0/webgl.idl
index 98c08681e..919c49ea7 100644
--- a/specs/latest/1.0/webgl.idl
+++ b/specs/latest/1.0/webgl.idl
@@ -3,7 +3,7 @@
 // WebGL IDL definitions scraped from the Khronos specification:
 // https://www.khronos.org/registry/webgl/specs/latest/
 
-// Copyright (c) 2023 The Khronos Group Inc.
+// Copyright (c) 2024 The Khronos Group Inc.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
 // copy of this software and/or associated documentation files (the
@@ -540,8 +540,11 @@ interface mixin WebGLRenderingContextBase
     readonly attribute GLsizei drawingBufferWidth;
     readonly attribute GLsizei drawingBufferHeight;
     readonly attribute GLenum drawingBufferFormat;
-    attribute PredefinedColorSpace drawingBufferColorSpace = "srgb";
-    attribute PredefinedColorSpace unpackColorSpace = "srgb";
+
+    /* Upon context creation, drawingBufferColorSpace and unpackColorSpace both
+       default to the value "srgb". */
+    attribute PredefinedColorSpace drawingBufferColorSpace;
+    attribute PredefinedColorSpace unpackColorSpace;
 
     [WebGLHandlesContextLoss] WebGLContextAttributes? getContextAttributes();
     [WebGLHandlesContextLoss] boolean isContextLost();