diff --git a/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.idl b/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.idl
index 3939c58e746..7e159e979c0 100644
--- a/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.idl
+++ b/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.idl
@@ -39,7 +39,7 @@ interface mixin WebGLRenderingContextBase {
     [FIXME] attribute PredefinedColorSpace unpackColorSpace;
 
     WebGLContextAttributes? getContextAttributes();
-    [FIXME] boolean isContextLost();
+    boolean isContextLost();
 
     sequence<DOMString>? getSupportedExtensions();
     object? getExtension(DOMString name);
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWebGLRenderingContext.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWebGLRenderingContext.cpp
index 1317bedba9c..2c015afbd3c 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWebGLRenderingContext.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWebGLRenderingContext.cpp
@@ -345,7 +345,7 @@ public:
             continue;
         }
 
-        if (function.name == "getSupportedExtensions"sv || function.name == "getExtension"sv || function.name == "getContextAttributes"sv) {
+        if (function.name == "getSupportedExtensions"sv || function.name == "getExtension"sv || function.name == "getContextAttributes"sv || function.name == "isContextLost"sv) {
             // Implemented in WebGLRenderingContext
             continue;
         }