diff --git a/src/reader/wgsl/parser_impl.cc b/src/reader/wgsl/parser_impl.cc
index 89cb4e956c..649589bf17 100644
--- a/src/reader/wgsl/parser_impl.cc
+++ b/src/reader/wgsl/parser_impl.cc
@@ -137,7 +137,6 @@ const char kBuiltinDecoration[] = "builtin";
 const char kGroupDecoration[] = "group";
 const char kLocationDecoration[] = "location";
 const char kOffsetDecoration[] = "offset";
-const char kSetDecoration[] = "set";
 const char kStageDecoration[] = "stage";
 const char kStrideDecoration[] = "stride";
 const char kWorkgroupSizeDecoration[] = "workgroup_size";
@@ -150,9 +149,8 @@ bool is_decoration(Token t) {
   return s == kAccessDecoration || s == kBindingDecoration ||
          s == kBlockDecoration || s == kBuiltinDecoration ||
          s == kLocationDecoration || s == kOffsetDecoration ||
-         s == kSetDecoration || s == kGroupDecoration ||
-         s == kStageDecoration || s == kStrideDecoration ||
-         s == kWorkgroupSizeDecoration;
+         s == kGroupDecoration || s == kStageDecoration ||
+         s == kStrideDecoration || s == kWorkgroupSizeDecoration;
 }
 
 /// Enter-exit counters for block token types.
@@ -2937,7 +2935,7 @@ Maybe<ast::Decoration*> ParserImpl::decoration() {
     });
   }
 
-  if (s == kSetDecoration || s == kGroupDecoration) {
+  if (s == kGroupDecoration) {
     const char* use = "group decoration";
     return expect_paren_block(use, [&]() -> Result {
       auto val = expect_positive_sint(use);
diff --git a/src/reader/wgsl/parser_impl_variable_decoration_test.cc b/src/reader/wgsl/parser_impl_variable_decoration_test.cc
index 9cf65ab04f..128ec8aabe 100644
--- a/src/reader/wgsl/parser_impl_variable_decoration_test.cc
+++ b/src/reader/wgsl/parser_impl_variable_decoration_test.cc
@@ -236,22 +236,6 @@ TEST_F(ParserImplTest, VariableDecoration_Binding_MissingInvalid) {
             "1:9: expected signed integer literal for binding decoration");
 }
 
-// DEPRECATED
-TEST_F(ParserImplTest, VariableDecoration_set) {
-  auto p = parser("set(4)");
-  auto deco = p->decoration();
-  EXPECT_TRUE(deco.matched);
-  EXPECT_FALSE(deco.errored);
-  ASSERT_NE(deco.value, nullptr);
-  auto* var_deco = deco.value->As<ast::VariableDecoration>();
-  ASSERT_FALSE(p->has_error());
-  ASSERT_NE(var_deco, nullptr);
-  ASSERT_TRUE(var_deco->Is<ast::GroupDecoration>());
-
-  auto* group = var_deco->As<ast::GroupDecoration>();
-  EXPECT_EQ(group->value(), 4u);
-}
-
 TEST_F(ParserImplTest, VariableDecoration_group) {
   auto p = parser("group(4)");
   auto deco = p->decoration();