diff --git a/crypto/asn1/d2i_s_pr.c b/crypto/asn1/d2i_s_pr.c
index dec2a2ebd3857ff2cbbdce10d0a37f198e7b993c..55d5802d702f220cb97fb225b88fab8093ddb95b 100644
--- a/crypto/asn1/d2i_s_pr.c
+++ b/crypto/asn1/d2i_s_pr.c
@@ -92,6 +92,7 @@ DSA *d2i_DSAPrivateKey(DSA **a, unsigned char **pp, long length)
 		== NULL) goto err_bn;
 
 	M_ASN1_INTEGER_free(bs);
+	bs = NULL;
 
 	M_ASN1_D2I_Finish_2(a);
 err_bn: