diff --git a/library/rsa.c b/library/rsa.c
index 3c2f314..7ea72cd 100644
--- a/library/rsa.c
+++ b/library/rsa.c
@@ -249,7 +249,7 @@
 int mbedtls_rsa_complete( mbedtls_rsa_context *ctx )
 {
     int ret = 0;
-    int have_N, have_P, have_Q, have_D, have_E;
+    int have_N, have_P, have_Q, have_D, have_E, have_DP, have_DQ, have_QP;
     int n_missing, pq_missing, d_missing, is_pub, is_priv;
 
     RSA_VALIDATE_RET( ctx != NULL );
@@ -259,6 +259,10 @@
     have_Q = ( mbedtls_mpi_cmp_int( &ctx->Q, 0 ) != 0 );
     have_D = ( mbedtls_mpi_cmp_int( &ctx->D, 0 ) != 0 );
     have_E = ( mbedtls_mpi_cmp_int( &ctx->E, 0 ) != 0 );
+    have_DP = ( mbedtls_mpi_cmp_int( &ctx->DP, 0 ) != 0 );
+    have_DQ = ( mbedtls_mpi_cmp_int( &ctx->DQ, 0 ) != 0 );
+    have_QP = ( mbedtls_mpi_cmp_int( &ctx->QP, 0 ) != 0 );
+
 
     /*
      * Check whether provided parameters are enough
@@ -325,7 +329,7 @@
      */
 
 #if !defined(MBEDTLS_RSA_NO_CRT)
-    if( is_priv )
+    if( is_priv && !(have_DP && have_DQ && have_QP))
     {
         ret = mbedtls_rsa_deduce_crt( &ctx->P,  &ctx->Q,  &ctx->D,
                                       &ctx->DP, &ctx->DQ, &ctx->QP );