diff --git a/test/default/box.c b/test/default/box.c
index 8c35b8a6..b5878de9 100644
--- a/test/default/box.c
+++ b/test/default/box.c
@@ -12,6 +12,11 @@ static const unsigned char bobpk[32]
         0xc2, 0xec, 0xe4, 0x35, 0x37, 0x3f, 0x83, 0x43, 0xc8, 0x5b, 0x78,
         0x67, 0x4d, 0xad, 0xfc, 0x7e, 0x14, 0x6f, 0x88, 0x2b, 0x4f };
 
+static const unsigned char small_order_p[crypto_scalarmult_BYTES]
+    = { 0xe0, 0xeb, 0x7a, 0x7c, 0x3b, 0x41, 0xb8, 0xae, 0x16, 0x56, 0xe3,
+        0xfa, 0xf1, 0x9f, 0xc4, 0x6a, 0xda, 0x09, 0x8d, 0xeb, 0x9c, 0x32,
+        0xb1, 0xfd, 0x86, 0x62, 0x05, 0x16, 0x5f, 0x49, 0xb8, 0x00 };
+
 static const unsigned char nonce[24]
     = { 0x69, 0x69, 0x6e, 0xe9, 0x55, 0xb6, 0x2b, 0x73,
         0xcd, 0x62, 0xbd, 0xa8, 0x75, 0xfc, 0x73, 0xd6,
@@ -50,8 +55,12 @@ int main(void)
             printf("\n");
     }
     printf("\n");
+    
+    ret = crypto_box(c, m, 163, nonce, small_order_p, alicesk);
+    assert(ret == -1);
 
     memset(c, 0, sizeof c);
+    
     ret = crypto_box_beforenm(k, bobpk, alicesk);
     assert(ret == 0);
     crypto_box_afternm(c, m, 163, nonce, k);
@@ -61,6 +70,9 @@ int main(void)
             printf("\n");
     }
     printf("\n");
+    
+    ret = crypto_box_beforenm(k, small_order_p, alicesk);
+    assert(ret == -1);
 
     assert(crypto_box_seedbytes() > 0U);
     assert(crypto_box_publickeybytes() > 0U);