diff --git a/openssl-sys/src/handwritten/cms.rs b/openssl-sys/src/handwritten/cms.rs
index e62e6295f9b83576c9ca748c016a6cbba6972b1e..a13ea423c447347e7f7696df515b291c05efef16 100644
--- a/openssl-sys/src/handwritten/cms.rs
+++ b/openssl-sys/src/handwritten/cms.rs
@@ -40,7 +40,7 @@ extern "C" {
         cms: *mut CMS_ContentInfo,
         certs: *mut stack_st_X509,
         store: *mut X509_STORE,
-        indata: *mut BIO,
+        detached_data: *mut BIO,
         out: *mut BIO,
         flags: c_uint,
     ) -> c_int;
diff --git a/openssl/src/cms.rs b/openssl/src/cms.rs
index c68b74dd687a7d00001461e638f15be42697a32d..3b4964c9fe73648dd801bfb699249ac2830d32a8 100644
--- a/openssl/src/cms.rs
+++ b/openssl/src/cms.rs
@@ -240,24 +240,24 @@ impl CmsContentInfo {
         &mut self,
         certs: Option<&StackRef<X509>>,
         store: &X509StoreRef,
-        indata: Option<&[u8]>,
+        detached_data: Option<&[u8]>,
         output_data: Option<&mut Vec<u8>>,
         flags: CMSOptions,
     ) -> Result<(), ErrorStack> {
         unsafe {
             let certs_ptr = certs.map_or(ptr::null_mut(), |p| p.as_ptr());
-            let indata_bio = match indata {
+            let detached_data_bio = match detached_data {
                 Some(data) => Some(MemBioSlice::new(data)?),
                 None => None,
             };
-            let indata_bio_ptr = indata_bio.as_ref().map_or(ptr::null_mut(), |p| p.as_ptr());
+            let detached_data_bio_ptr = detached_data_bio.as_ref().map_or(ptr::null_mut(), |p| p.as_ptr());
             let out_bio = MemBio::new()?;
 
             cvt(ffi::CMS_verify(
                 self.as_ptr(),
                 certs_ptr,
                 store.as_ptr(),
-                indata_bio_ptr,
+                detached_data_bio_ptr,
                 out_bio.as_ptr(),
                 flags.bits(),
             ))?;