diff --git a/Libraries/LibWeb/WebGL/WebGL2RenderingContextBase.idl b/Libraries/LibWeb/WebGL/WebGL2RenderingContextBase.idl
index ce4f485b7c..e1caf7c44f 100644
--- a/Libraries/LibWeb/WebGL/WebGL2RenderingContextBase.idl
+++ b/Libraries/LibWeb/WebGL/WebGL2RenderingContextBase.idl
@@ -14,8 +14,7 @@
 #import <WebGL/WebGLUniformLocation.idl>
 #import <WebGL/WebGLVertexArrayObject.idl>
 
-// FIXME: BufferSource should be a Uint32Array
-typedef (BufferSource or sequence<GLuint>) Uint32List;
+typedef (Uint32Array or sequence<GLuint>) Uint32List;
 
 // https://registry.khronos.org/webgl/specs/latest/2.0/#3.7
 interface mixin WebGL2RenderingContextBase {
diff --git a/Libraries/LibWeb/WebGL/WebGL2RenderingContextImpl.cpp b/Libraries/LibWeb/WebGL/WebGL2RenderingContextImpl.cpp
index dc4be94a7b..4efa9f462d 100644
--- a/Libraries/LibWeb/WebGL/WebGL2RenderingContextImpl.cpp
+++ b/Libraries/LibWeb/WebGL/WebGL2RenderingContextImpl.cpp
@@ -484,36 +484,22 @@ void WebGL2RenderingContextImpl::clear_bufferiv(WebIDL::UnsignedLong buffer, Web
     needs_to_present();
 }
 
-void WebGL2RenderingContextImpl::clear_bufferuiv(WebIDL::UnsignedLong buffer, WebIDL::Long drawbuffer, Variant<GC::Root<WebIDL::BufferSource>, Vector<WebIDL::UnsignedLong>> values, WebIDL::UnsignedLongLong src_offset)
+void WebGL2RenderingContextImpl::clear_bufferuiv(WebIDL::UnsignedLong buffer, WebIDL::Long drawbuffer, Uint32List values, WebIDL::UnsignedLongLong src_offset)
 {
     m_context->make_current();
     m_context->notify_content_will_change();
 
-    u32 const* data = nullptr;
-    size_t count = 0;
-    if (values.has<Vector<u32>>()) {
-        auto& vector = values.get<Vector<u32>>();
-        data = vector.data();
-        count = vector.size();
-    } else if (values.has<GC::Root<WebIDL::BufferSource>>()) {
-        auto& typed_array_base = static_cast<JS::TypedArrayBase&>(*values.get<GC::Root<WebIDL::BufferSource>>()->raw_object());
-        auto& typed_array = as<JS::Uint32Array>(typed_array_base);
-        data = typed_array.data().data();
-        count = typed_array.array_length().length();
-    } else {
-        VERIFY_NOT_REACHED();
-    }
-
+    auto span = span_from_uint32_list(values);
     switch (buffer) {
     case GL_COLOR:
-        if (src_offset + 4 > count) {
+        if (src_offset + 4 > span.size()) {
             set_error(GL_INVALID_VALUE);
             return;
         }
         break;
     case GL_DEPTH:
     case GL_STENCIL:
-        if (src_offset + 1 > count) {
+        if (src_offset + 1 > span.size()) {
             set_error(GL_INVALID_VALUE);
             return;
         }
@@ -524,8 +510,8 @@ void WebGL2RenderingContextImpl::clear_bufferuiv(WebIDL::UnsignedLong buffer, We
         return;
     }
 
-    data += src_offset;
-    glClearBufferuiv(buffer, drawbuffer, data);
+    span = span.slice(src_offset);
+    glClearBufferuiv(buffer, drawbuffer, span.data());
     needs_to_present();
 }
 
diff --git a/Libraries/LibWeb/WebGL/WebGL2RenderingContextImpl.h b/Libraries/LibWeb/WebGL/WebGL2RenderingContextImpl.h
index d03c590893..9836e8c796 100644
--- a/Libraries/LibWeb/WebGL/WebGL2RenderingContextImpl.h
+++ b/Libraries/LibWeb/WebGL/WebGL2RenderingContextImpl.h
@@ -50,7 +50,7 @@ public:
     void draw_buffers(Vector<WebIDL::UnsignedLong> buffers);
     void clear_bufferfv(WebIDL::UnsignedLong buffer, WebIDL::Long drawbuffer, Float32List values, WebIDL::UnsignedLongLong src_offset);
     void clear_bufferiv(WebIDL::UnsignedLong buffer, WebIDL::Long drawbuffer, Int32List values, WebIDL::UnsignedLongLong src_offset);
-    void clear_bufferuiv(WebIDL::UnsignedLong buffer, WebIDL::Long drawbuffer, Variant<GC::Root<WebIDL::BufferSource>, Vector<WebIDL::UnsignedLong>> values, WebIDL::UnsignedLongLong src_offset);
+    void clear_bufferuiv(WebIDL::UnsignedLong buffer, WebIDL::Long drawbuffer, Uint32List values, WebIDL::UnsignedLongLong src_offset);
     void clear_bufferfi(WebIDL::UnsignedLong buffer, WebIDL::Long drawbuffer, float depth, WebIDL::Long stencil);
     GC::Root<WebGLSampler> create_sampler();
     void delete_sampler(GC::Root<WebGLSampler> sampler);
diff --git a/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.h b/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.h
index 8066f46bd6..6f393bc0f7 100644
--- a/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.h
+++ b/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.h
@@ -21,6 +21,7 @@ class WebGLRenderingContextBase {
 public:
     using Float32List = Variant<GC::Root<JS::Float32Array>, Vector<float>>;
     using Int32List = Variant<GC::Root<JS::Int32Array>, Vector<WebIDL::Long>>;
+    using Uint32List = Variant<GC::Root<JS::Uint32Array>, Vector<WebIDL::UnsignedLong>>;
 
     virtual GC::Cell const* gc_cell() const = 0;
     virtual void visit_edges(JS::Cell::Visitor&) = 0;
@@ -39,6 +40,13 @@ public:
             return int32_list.get<Vector<int>>();
         return int32_list.get<GC::Root<JS::Int32Array>>()->data();
     }
+
+    static Span<u32> span_from_uint32_list(Uint32List& int32_list)
+    {
+        if (int32_list.has<Vector<u32>>())
+            return int32_list.get<Vector<u32>>();
+        return int32_list.get<GC::Root<JS::Uint32Array>>()->data();
+    }
 };
 
 }
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
index 82d0ed3a23..6128ed53e0 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
@@ -183,6 +183,7 @@ static bool is_javascript_builtin(Type const& type)
         "Float64Array"sv,
         "Int32Array"sv,
         "Uint8Array"sv,
+        "Uint32Array"sv,
         "Uint8ClampedArray"sv,
     };