diff --git a/matlab/surgibbs.m b/matlab/surgibbs.m
index e33d56e50..c7b8398cb 100644
--- a/matlab/surgibbs.m
+++ b/matlab/surgibbs.m
@@ -35,7 +35,7 @@ function surgibbs(ds, A, ndraws, discarddraws)
 % Ando, Tomohiro and Zellner, Arnold. 2010. Hierarchical Bayesian Analysis of the
 % Seemingly Unrelated Regression and Simultaneous Equations Models Using a
 % Combination of Direct Monte Carlo and Importance Sampling Techniques.
-% Bayesian Analysis Volume 5, Number 1, pp. 65?96.
+% Bayesian Analysis Volume 5, Number 1, pp. 65-96.
 
 global M_ oo_
 
diff --git a/tests/ECB/SURGibbs/fulton_fish.mod b/tests/ECB/SURGibbs/fulton_fish.mod
index f0c4847b2..0466d5faa 100644
--- a/tests/ECB/SURGibbs/fulton_fish.mod
+++ b/tests/ECB/SURGibbs/fulton_fish.mod
@@ -3,7 +3,7 @@
 % Ando, Tomohiro and Zellner, Arnold. 2010. Hierarchical Bayesian Analysis of the
 % Seemingly Unrelated Regression and Simultaneous Equations Models Using a
 % Combination of Direct Monte Carlo and Importance Sampling Techniques.
-% Bayesian Analysis Volume 5, Number 1, pp. 65?96.
+% Bayesian Analysis Volume 5, Number 1, pp. 65-96.
 
 var qty, price;
 varexo res_u, res_v, stormy, mixed;