1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/ec/ec_asn1.c b/crypto/ec/ec_asn1.c
index 7a0b35a59431..c018f392894d 100644
--- a/crypto/ec/ec_asn1.c
+++ b/crypto/ec/ec_asn1.c
@@ -1161,7 +1161,7 @@ int i2o_ECPublicKey(const EC_KEY *a, unsigned char **out)
     size_t buf_len = 0;
     int new_buffer = 0;
 
-    if (a == NULL) {
+    if (a == NULL || a->pub_key == NULL) {
         ERR_raise(ERR_LIB_EC, ERR_R_PASSED_NULL_PARAMETER);
         return 0;
     }