diff --git a/include/polarssl/x509_crt.h b/include/polarssl/x509_crt.h
index 57dbed2..e90e357 100644
--- a/include/polarssl/x509_crt.h
+++ b/include/polarssl/x509_crt.h
@@ -93,7 +93,7 @@
     x509_buf sig;               /**< Signature: hash of the tbs part signed with the private key. */
     md_type_t sig_md;           /**< Internal representation of the MD algorithm of the signature algorithm, e.g. POLARSSL_MD_SHA256 */
     pk_type_t sig_pk;           /**< Internal representation of the Public Key algorithm of the signature algorithm, e.g. POLARSSL_PK_RSA */
-    void *sig_opts;             /**< Signature options to be passed to pk_verify_ext(), eg for RSASSA-PSS */
+    void *sig_opts;             /**< Signature options to be passed to pk_verify_ext(), e.g. for RSASSA-PSS */
 
     struct _x509_crt *next;     /**< Next certificate in the CA-chain. */
 }