diff --git a/oclvanitygen.c b/oclvanitygen.c
index 83c3afb..8b196b5 100644
--- a/oclvanitygen.c
+++ b/oclvanitygen.c
@@ -1621,6 +1621,7 @@ main(int argc, char **argv)
 			break;
 		case 'N':
 			addrtype = 52;
+			privtype = 180;
 			break;
 		case 'T':
 			addrtype = 111;
diff --git a/vanitygen.c b/vanitygen.c
index 5fa5fc1..93da58a 100644
--- a/vanitygen.c
+++ b/vanitygen.c
@@ -492,6 +492,7 @@ main(int argc, char **argv)
 			break;
 		case 'N':
 			addrtype = 52;
+			privtype = 180;
 			break;
 		case 'T':
 			addrtype = 111;