diff --git a/spyder/plugins/completion/tests/conftest.py b/spyder/plugins/completion/tests/conftest.py
index 4d037eccfd0..15811cd2ad7 100644
--- a/spyder/plugins/completion/tests/conftest.py
+++ b/spyder/plugins/completion/tests/conftest.py
@@ -59,7 +59,7 @@ def register_plugin(self, plugin_name, external=False):
         plugin = PLUGIN_REGISTRY.get_plugin(plugin_name)
         plugin._register()
 
-    def get_plugin(self, plugin_name):
+    def get_plugin(self, plugin_name, error=True):
         if plugin_name in PLUGIN_REGISTRY:
             return PLUGIN_REGISTRY.get_plugin(plugin_name)
 
diff --git a/spyder/plugins/preferences/tests/conftest.py b/spyder/plugins/preferences/tests/conftest.py
index 33b55907197..bc140e604f9 100644
--- a/spyder/plugins/preferences/tests/conftest.py
+++ b/spyder/plugins/preferences/tests/conftest.py
@@ -65,7 +65,7 @@ def register_plugin(self, plugin_name, external=False):
         plugin = PLUGIN_REGISTRY.get_plugin(plugin_name)
         plugin._register(omit_conf=True)
 
-    def get_plugin(self, plugin_name):
+    def get_plugin(self, plugin_name, error=True):
         if plugin_name in PLUGIN_REGISTRY:
             return PLUGIN_REGISTRY.get_plugin(plugin_name)
 
@@ -88,7 +88,7 @@ def register_plugin(self, plugin_name, external=False):
             plugin = PLUGIN_REGISTRY.get_plugin(plugin_name)
             plugin._register()
 
-        def get_plugin(self, plugin_name, error=False):
+        def get_plugin(self, plugin_name, error=True):
             if plugin_name in PLUGIN_REGISTRY:
                 return PLUGIN_REGISTRY.get_plugin(plugin_name)
             return None
diff --git a/spyder/plugins/pylint/tests/test_pylint.py b/spyder/plugins/pylint/tests/test_pylint.py
index 858d114668e..8ace68ebeb2 100644
--- a/spyder/plugins/pylint/tests/test_pylint.py
+++ b/spyder/plugins/pylint/tests/test_pylint.py
@@ -75,7 +75,7 @@ def __init__(self):
             'projects': self.projects
         }
 
-    def get_plugin(self, plugin_name):
+    def get_plugin(self, plugin_name, error=True):
         return PLUGIN_REGISTRY.get_plugin(plugin_name)
 
 
diff --git a/spyder/plugins/workingdirectory/tests/test_workingdirectory.py b/spyder/plugins/workingdirectory/tests/test_workingdirectory.py
index 685a0616d72..607a3312b85 100644
--- a/spyder/plugins/workingdirectory/tests/test_workingdirectory.py
+++ b/spyder/plugins/workingdirectory/tests/test_workingdirectory.py
@@ -32,7 +32,7 @@ def __init__(self):
         self._cli_options = get_options(sys_argv)[0]
         super().__init__()
 
-    def get_plugin(self, plugin):
+    def get_plugin(self, plugin, error=True):
         return Mock()