diff --git a/keystore/blob.cpp b/keystore/blob.cpp
index aa1ae37..d21c691 100644
--- a/keystore/blob.cpp
+++ b/keystore/blob.cpp
@@ -114,13 +114,13 @@
     out_pos += out_len;
     if (!EVP_DecryptFinal_ex(ctx.get(), out_pos, &out_len)) {
         ALOGD("Failed to decrypt blob; ciphertext or tag is likely corrupted");
-        return ResponseCode::SYSTEM_ERROR;
+        return ResponseCode::VALUE_CORRUPTED;
     }
     out_pos += out_len;
     if (out_pos - out_tmp.get() != static_cast<ssize_t>(len)) {
         ALOGD("Encrypted plaintext is the wrong size, expected %zu, got %zd", len,
               out_pos - out_tmp.get());
-        return ResponseCode::SYSTEM_ERROR;
+        return ResponseCode::VALUE_CORRUPTED;
     }
 
     std::copy(out_tmp.get(), out_pos, out);