diff --git a/src/pae/aidl/aidl_psk.cpp b/src/pae/aidl/aidl_psk.cpp
index 67afef0..53f4f4f 100644
--- a/src/pae/aidl/aidl_psk.cpp
+++ b/src/pae/aidl/aidl_psk.cpp
@@ -74,6 +74,7 @@
 	if (pskPlugin == NULL)
 		return -ENODEV;
 
+        n++;
 	n = n * 8;
 	if (n < 8)
 		return -ENODEV;