diff --git a/sys/libjade/build.rs b/sys/libjade/build.rs
index d19e99f81..5b77234da 100644
--- a/sys/libjade/build.rs
+++ b/sys/libjade/build.rs
@@ -5,12 +5,10 @@ macro_rules! svec {
     }
 
 fn append_simd128_flags(flags: &mut Vec<String>) {
-    flags.push("-DSIMD128".to_string());
     flags.push("-mavx".to_string());
 }
 
 fn append_simd256_flags(flags: &mut Vec<String>) {
-    flags.push("-DSIMD256".to_string());
     flags.push("-mavx2".to_string());
 }
 
@@ -20,9 +18,11 @@ fn create_bindings(platform: Platform, home_dir: &Path) {
     let mut clang_args = vec![format!("-I{}", jazz_dir.join("include").display())];
     if platform.simd128 {
         append_simd128_flags(&mut clang_args);
+        clang_args.push("-DSIMD128".to_string());
     }
     if platform.simd256 {
         append_simd256_flags(&mut clang_args);
+        clang_args.push("-DSIMD256".to_string());
     }
 
     let bindings = bindgen::Builder::default()
diff --git a/sys/libjade/src/bindings.rs b/sys/libjade/src/bindings.rs
index e784d9931..bca570c27 100644
--- a/sys/libjade/src/bindings.rs
+++ b/sys/libjade/src/bindings.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.66.1 */
+/* automatically generated by rust-bindgen 0.68.1 */
 
 pub const JADE_HASH_SHA256_AMD64_REF_BYTES: u32 = 32;
 pub const JADE_HASH_SHA256_AMD64_REF_ALGNAME: &[u8; 7] = b"SHA256\0";