diff --git a/Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/symboltree/SymbolTreePlugin1Test.java b/Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/symboltree/SymbolTreePlugin1Test.java
index 461e9a66db..7d7f12d207 100644
--- a/Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/symboltree/SymbolTreePlugin1Test.java
+++ b/Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/symboltree/SymbolTreePlugin1Test.java
@@ -505,8 +505,8 @@ public class SymbolTreePlugin1Test extends AbstractGhidraHeadedIntegrationTest {
 		DefaultTreeCellEditor cellEditor = (DefaultTreeCellEditor) tree.getCellEditor();
 		JTree jTree = (JTree) AbstractGenericTest.getInstanceField("tree", tree);
 
-		Container container = (Container) cellEditor.getTreeCellEditorComponent(jTree, newNsNode,
-			true, true, true, row);
+		Container container = (Container) runSwing(
+			() -> cellEditor.getTreeCellEditorComponent(jTree, newNsNode, true, true, true, row));
 		JTextField textField = (JTextField) container.getComponent(0);
 		assertEquals("NewNamespace", textField.getText());
 	}