diff --git a/wrapper/rust/wolfssl-wolfcrypt/src/rsa_pkcs1v15.rs b/wrapper/rust/wolfssl-wolfcrypt/src/rsa_pkcs1v15.rs
index c20d2a3e26..cd0079beda 100644
--- a/wrapper/rust/wolfssl-wolfcrypt/src/rsa_pkcs1v15.rs
+++ b/wrapper/rust/wolfssl-wolfcrypt/src/rsa_pkcs1v15.rs
@@ -337,7 +337,7 @@ impl<H: Hash, const N: usize> Keypair for SigningKey<H, N> {
             panic!("wc_RsaFlattenPublicKey failed: {rc}");
         }
         if (n_len as usize) != N || e_len == 0 || (e_len as usize) > MAX_E_LEN {
-            panic!("wc_RsaFlattenPublicKey failed: e_len: {e_len}, n_len: {n_len}");
+            panic!("wc_RsaFlattenPublicKey returned unexpected lengths: e_len: {e_len}, n_len: {n_len}");
         }
         VerifyingKey {
             n,