diff --git a/library/x509_csr.c b/library/x509_csr.c
index d1a2760..23af9ae 100644
--- a/library/x509_csr.c
+++ b/library/x509_csr.c
@@ -183,15 +183,17 @@
         mbedtls_x509_csr_free( csr );
         return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
     }
+    p += len;
+    csr->subject_raw.len = p - csr->subject_raw.p;
 
-    if( ( ret = mbedtls_x509_get_name( &p, p + len, &csr->subject ) ) != 0 )
+    if( ( ret = mbedtls_x509_get_name( csr->subject_raw.p,
+                                       csr->subject_raw.len,
+                                       &csr->subject ) ) != 0 )
     {
         mbedtls_x509_csr_free( csr );
         return( ret );
     }
 
-    csr->subject_raw.len = p - csr->subject_raw.p;
-
     /*
      *  subjectPKInfo SubjectPublicKeyInfo
      */