diff --git a/circ_vmrnd.m b/circ_vmrnd.m
index a948657..00285bc 100644
--- a/circ_vmrnd.m
+++ b/circ_vmrnd.m
@@ -47,7 +47,7 @@
 
 % if kappa is small, treat as uniform distribution
 if kappa < 1e-6
-    alpha = 2*pi*rand(n,1);
+    alpha = 2*pi*rand(n,1)-pi;
     return
 end