diff --git a/src/wstool/config_yaml.py b/src/wstool/config_yaml.py
index 19f82e5..e64325b 100644
--- a/src/wstool/config_yaml.py
+++ b/src/wstool/config_yaml.py
@@ -446,7 +446,7 @@ def generate_config_yaml(config, filename, header, pretty=False,
             content += yaml.safe_dump(items, allow_unicode=True,
                                       default_flow_style=False)
         else:
-            content += yaml.safe_dump(items)
+            content += yaml.safe_dump(items, default_flow_style=None)
 
     if filename:
         config_filepath = filename if os.path.isabs(filename) else \
diff --git a/src/wstool/multiproject_cli.py b/src/wstool/multiproject_cli.py
index 3c652d0..b0148cc 100644
--- a/src/wstool/multiproject_cli.py
+++ b/src/wstool/multiproject_cli.py
@@ -1274,7 +1274,7 @@ def cmd_info(self, target_path, argv, reverse=True, config=None):
             # but that command was not implemented.
             source_aggregate = multiproject_cmd.cmd_snapshot(config,
                                                              localnames=args)
-            print(yaml.safe_dump(source_aggregate), end='')
+            print(yaml.safe_dump(source_aggregate, default_flow_style=None), end='')
             return 0
 
         # this call takes long, as it invokes scms.