diff --git a/classes/SCDclass_mdsobjcontainer.m b/classes/SCDclass_mdsobjcontainer.m
index 532fdd2522a3f50ff465aad692775134742361bd..e4957e32778d1762bd527cd4224bc2a99154de8e 100644
--- a/classes/SCDclass_mdsobjcontainer.m
+++ b/classes/SCDclass_mdsobjcontainer.m
@@ -299,8 +299,8 @@ classdef SCDclass_mdsobjcontainer
                             fprintf(" TimeOffset = 0.0\n");
                             server=actserver;
                             tree=acttree;
-                            fprintf(' Server=%s\n', server);
-                            fprintf(' Tree=%s\n', tree)
+                            fprintf(' Server="%s"\n', server);
+                            fprintf(' Tree="%s"\n', tree)
                             
                             % error('SCDclass_mdsobjcontainer:multipleconnections','multiple MDS+ connections/trees not supported within the same wavegen generator');
                         else
@@ -308,8 +308,8 @@ classdef SCDclass_mdsobjcontainer
                             
                             server=actserver;
                             tree=acttree;
-                            fprintf(' Server=%s\n', server);
-                            fprintf(' Tree=%s\n', tree)
+                            fprintf(' Server="%s"\n', server);
+                            fprintf(' Tree="%s"\n', tree)
                         end
                     end