diff --git a/src/Mod/AddonManager/AddonManagerTest/gui/gui_mocks.py b/src/Mod/AddonManager/AddonManagerTest/gui/gui_mocks.py
index 7ce9d15106..7d08e7739a 100644
--- a/src/Mod/AddonManager/AddonManagerTest/gui/gui_mocks.py
+++ b/src/Mod/AddonManager/AddonManagerTest/gui/gui_mocks.py
@@ -45,7 +45,9 @@ class DialogInteractor(QtCore.QObject):
         self.execution_counter = 0
         self.timer = QtCore.QTimer()
         self.timer.timeout.connect(self.run)
-        self.timer.start(10)
+        self.timer.start(
+            1
+        )  # At 10 this occasionally left open dialogs; less than 1 produced failed tests
 
     def run(self):
         widget = QtWidgets.QApplication.activeModalWidget()