diff --git a/test/sslapitest.c b/test/sslapitest.c
index 1cf5c4fc6cecddaa50f08d33295ea38c8000f917..6480885fcd49e3c45d67f83b54bd051f3d9494c9 100644
--- a/test/sslapitest.c
+++ b/test/sslapitest.c
@@ -3227,6 +3227,7 @@ static int test_export_key_mat_early(int idx)
         SSL_SESSION_free(sess);
     SSL_SESSION_free(clientpsk);
     SSL_SESSION_free(serverpsk);
+    clientpsk = serverpsk = NULL;
     SSL_free(serverssl);
     SSL_free(clientssl);
     SSL_CTX_free(sctx);