diff --git a/library/pkparse.c b/library/pkparse.c
index efdf437..de0881a 100644
--- a/library/pkparse.c
+++ b/library/pkparse.c
@@ -1082,7 +1082,10 @@
     if( ret == 0 )
     {
         if( ( pk_info = mbedtls_pk_info_from_type( MBEDTLS_PK_RSA ) ) == NULL )
+        {
+            mbedtls_pem_free( &pem );
             return( MBEDTLS_ERR_PK_UNKNOWN_PK_ALG );
+        }
 
         if( ( ret = mbedtls_pk_setup( pk, pk_info                    ) ) != 0 ||
             ( ret = pk_parse_key_pkcs1_der( mbedtls_pk_rsa( *pk ),
@@ -1114,7 +1117,10 @@
     if( ret == 0 )
     {
         if( ( pk_info = mbedtls_pk_info_from_type( MBEDTLS_PK_ECKEY ) ) == NULL )
+        {
+            mbedtls_pem_free( &pem );
             return( MBEDTLS_ERR_PK_UNKNOWN_PK_ALG );
+        }
 
         if( ( ret = mbedtls_pk_setup( pk, pk_info                   ) ) != 0 ||
             ( ret = pk_parse_key_sec1_der( mbedtls_pk_ec( *pk ),