diff --git a/tests/steady_state/walsh1_old_ss_steadystate.m b/tests/steady_state/walsh1_old_ss_steadystate.m
index 6543d0618..fa6f5d95e 100644
--- a/tests/steady_state/walsh1_old_ss_steadystate.m
+++ b/tests/steady_state/walsh1_old_ss_steadystate.m
@@ -1,5 +1,7 @@
 function [ys,params,check] = walsh1_old_ss_steadystate(ys,exo,M_,options_)
 
+delta = NaN;
+
 % read out parameters to access them with their name
 NumberOfParameters = M_.param_nbr;
 for ii = 1:NumberOfParameters
@@ -11,35 +13,35 @@ check = 0;
 
 
 %% Enter model equations here
- 
-    pi = thetass-1;
-    en = 1/3;
-    eR = 1/betta;
-    y_k = (1/alphha)*(1/betta-1+delta);
-    ek = en*y_k^(-1/(1-alphha));
-    ec = ek*(y_k-delta);
-    em = ec*(a/(1-a))^(-1/b)*((thetass-betta)/thetass)^(-1/b);
-    ey = ek*y_k;
-    Xss = a*ec^(1-b)*(1+(a/(1-a))^(-1/b)*((thetass-betta)/thetass)^((b-1)/b));
-    Psi = (1-alphha)*(ey/en)*Xss^((b-phi1)/(1-b))*a*ec^(-b)*(1-en)^eta;
-    n = log(en);
-    k = log(ek);
-    m = log(em);
-    c = log(ec);
-    y = log(ey);
-    R = log(eR);
-    z = 0;
-    u = 0;
-    
+
+pi = thetass-1;
+en = 1/3;
+eR = 1/betta;
+y_k = (1/alphha)*(1/betta-1+delta);
+ek = en*y_k^(-1/(1-alphha));
+ec = ek*(y_k-delta);
+em = ec*(a/(1-a))^(-1/b)*((thetass-betta)/thetass)^(-1/b);
+ey = ek*y_k;
+Xss = a*ec^(1-b)*(1+(a/(1-a))^(-1/b)*((thetass-betta)/thetass)^((b-1)/b));
+Psi = (1-alphha)*(ey/en)*Xss^((b-phi1)/(1-b))*a*ec^(-b)*(1-en)^eta;
+n = log(en);
+k = log(ek);
+m = log(em);
+c = log(ec);
+y = log(ey);
+R = log(eR);
+z = 0;
+u = 0;
+
 %% end own model equations
 
 params=NaN(NumberOfParameters,1);
 for iter = 1:NumberOfParameters %update parameters set in the file
-  eval([ 'params(' num2str(iter) ') = ' M_.param_names{iter} ';' ])
+    eval([ 'params(' num2str(iter) ') = ' M_.param_names{iter} ';' ])
 end
 
 NumberOfEndogenousVariables = M_.orig_endo_nbr; %auxiliary variables are set automatically
 for ii = 1:NumberOfEndogenousVariables
-  varname = M_.endo_names{ii};
-  eval(['ys(' int2str(ii) ') = ' varname ';']);
+    varname = M_.endo_names{ii};
+    eval(['ys(' int2str(ii) ') = ' varname ';']);
 end