diff --git a/src/utils.jl b/src/utils.jl
index f2b2a6ff..458ce8cb 100644
--- a/src/utils.jl
+++ b/src/utils.jl
@@ -235,7 +235,7 @@ end
 function fakedata(sz...)
   y = zeros(sz...)
   for r in 2:size(y,1)
-    y[r,:] = 0.95 * y[r-1,:] + randn(size(y,2))
+    y[r,:] = 0.95 * vec(y[r-1,:]) + randn(size(y,2))
   end
   y
 end