diff --git a/spearmint/tasks/input_space.py b/spearmint/tasks/input_space.py
index 113e055..a8b29c3 100644
--- a/spearmint/tasks/input_space.py
+++ b/spearmint/tasks/input_space.py
@@ -282,8 +282,10 @@ def print_params(self, params, left_indent=0, indent_top_row=True, print_func=lo
 
             if param['type'] == 'float':
                 format_str = '%s%-12.12s  %-9.9s  %-12f'
-            else:
+            elif param['type'] == 'int':
                 format_str = '%s%-12.12s  %-9.9s  %-12d'
+            else:
+                format_str = '%s%-12.12s  %-9.9s  %-12s'
 
             for i in xrange(len(param['values'])):
                 if i == 0:
@@ -484,4 +486,4 @@ def paramify_no_types(input_params):
         else:
             raise Exception("Unknown parameter type.")
 
-    return params
\ No newline at end of file
+    return params