diff --git a/crates/fuzzing/src/generators.rs b/crates/fuzzing/src/generators.rs
index 361298ca3c..242a5bc3bb 100644
--- a/crates/fuzzing/src/generators.rs
+++ b/crates/fuzzing/src/generators.rs
@@ -142,12 +142,6 @@ impl wasm_smith::Config for WasmtimeDefaultConfig {
         4
     }
 
-    // Turn some wasm features default-on for those that have a finished
-    // implementation in Wasmtime.
-    fn simd_enabled(&self) -> bool {
-        true
-    }
-
     fn reference_types_enabled(&self) -> bool {
         true
     }
diff --git a/crates/fuzzing/src/lib.rs b/crates/fuzzing/src/lib.rs
index 16b9441caf..4e93b52216 100644
--- a/crates/fuzzing/src/lib.rs
+++ b/crates/fuzzing/src/lib.rs
@@ -40,7 +40,6 @@ pub fn fuzz_default_config(strategy: wasmtime::Strategy) -> anyhow::Result<wasmt
         .wasm_reference_types(true)
         .wasm_module_linking(true)
         .wasm_multi_memory(true)
-        .wasm_simd(true)
         .wasm_memory64(true)
         .strategy(strategy)?;
     Ok(config)
diff --git a/fuzz/fuzz_targets/differential_v8.rs b/fuzz/fuzz_targets/differential_v8.rs
index 3870e09759..dc6ad860fc 100644
--- a/fuzz/fuzz_targets/differential_v8.rs
+++ b/fuzz/fuzz_targets/differential_v8.rs
@@ -5,7 +5,7 @@ use wasmtime_fuzzing::{generators, oracles};
 
 fuzz_target!(|data: (
     generators::Config,
-    wasm_smith::ConfiguredModule<oracles::SingleFunctionModuleConfig<true, true>>
+    wasm_smith::ConfiguredModule<oracles::SingleFunctionModuleConfig<false, true>>
 )| {
     let (config, mut wasm) = data;
     wasm.module.ensure_termination(1000);