diff --git a/compiler/rustc_target/src/spec/base/wasm.rs b/compiler/rustc_target/src/spec/base/wasm.rs
index f237391016e77..954a28fdbc153 100644
--- a/compiler/rustc_target/src/spec/base/wasm.rs
+++ b/compiler/rustc_target/src/spec/base/wasm.rs
@@ -124,6 +124,9 @@ pub fn options() -> TargetOptions {
         // representation, so this is disabled.
         generate_arange_section: false,
 
+        // LLVM has enabled target features by default that are not ready in Rust yet.
+        features: "-multivalue,-reference-types".into(),
+
         ..Default::default()
     }
 }
diff --git a/compiler/rustc_target/src/spec/targets/wasm32_unknown_emscripten.rs b/compiler/rustc_target/src/spec/targets/wasm32_unknown_emscripten.rs
index 195ff46cf9d25..3c6c5e223e8cf 100644
--- a/compiler/rustc_target/src/spec/targets/wasm32_unknown_emscripten.rs
+++ b/compiler/rustc_target/src/spec/targets/wasm32_unknown_emscripten.rs
@@ -20,6 +20,7 @@ pub fn target() -> Target {
         panic_strategy: PanicStrategy::Unwind,
         no_default_libraries: false,
         families: cvs!["unix", "wasm"],
+        features: "-multivalue,-reference-types".into(),
         ..base::wasm::options()
     };
     Target {
diff --git a/compiler/rustc_target/src/spec/targets/wasm32_wasip1_threads.rs b/compiler/rustc_target/src/spec/targets/wasm32_wasip1_threads.rs
index 38af48ab2665a..ee729d4f78d1c 100644
--- a/compiler/rustc_target/src/spec/targets/wasm32_wasip1_threads.rs
+++ b/compiler/rustc_target/src/spec/targets/wasm32_wasip1_threads.rs
@@ -57,7 +57,7 @@ pub fn target() -> Target {
     options.entry_name = "__main_void".into();
 
     options.singlethread = false;
-    options.features = "+atomics,+bulk-memory,+mutable-globals".into();
+    options.features = "-multivalue,-reference-types,+atomics,+bulk-memory".into();
 
     Target {
         llvm_target: "wasm32-wasi".into(),
diff --git a/compiler/rustc_target/src/spec/targets/wasm64_unknown_unknown.rs b/compiler/rustc_target/src/spec/targets/wasm64_unknown_unknown.rs
index 8edde36dac623..bf50a4a70158e 100644
--- a/compiler/rustc_target/src/spec/targets/wasm64_unknown_unknown.rs
+++ b/compiler/rustc_target/src/spec/targets/wasm64_unknown_unknown.rs
@@ -35,7 +35,7 @@ pub fn target() -> Target {
     // Any engine that implements wasm64 will surely implement the rest of these
     // features since they were all merged into the official spec by the time
     // wasm64 was designed.
-    options.features = "+bulk-memory,+mutable-globals,+sign-ext,+nontrapping-fptoint".into();
+    options.features = "-multivalue,-reference-types,+bulk-memory,+nontrapping-fptoint".into();
 
     Target {
         llvm_target: "wasm64-unknown-unknown".into(),