diff --git a/crypto/bn/bn_recp.c b/crypto/bn/bn_recp.c
index 7497ac624..f047040ef 100644
--- a/crypto/bn/bn_recp.c
+++ b/crypto/bn/bn_recp.c
@@ -65,6 +65,7 @@ void BN_RECP_CTX_init(BN_RECP_CTX *recp)
     BN_init(&(recp->N));
     BN_init(&(recp->Nr));
     recp->num_bits = 0;
+    recp->shift = 0;
     recp->flags = 0;
 }