diff --git a/tools/phosphor-logging/templates/elog-gen-template.mako.hpp b/tools/phosphor-logging/templates/elog-gen-template.mako.hpp
index 9d15c6b..1a077ca 100644
--- a/tools/phosphor-logging/templates/elog-gen-template.mako.hpp
+++ b/tools/phosphor-logging/templates/elog-gen-template.mako.hpp
@@ -22,7 +22,7 @@
         exceptions.append(exception)
 %>\
 % endfor
-% for exception in set(exceptions):
+% for exception in sorted(set(exceptions)):
 <%
     ns = exception.split("::")
     exception_name = ns[-1]