diff --git a/Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/function/editor/FunctionEditorModel.java b/Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/function/editor/FunctionEditorModel.java
index a90bd312e9..8895e04eeb 100644
--- a/Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/function/editor/FunctionEditorModel.java
+++ b/Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/function/editor/FunctionEditorModel.java
@@ -608,9 +608,9 @@ public class FunctionEditorModel {
 				ParamInfo paramInfo = parameters.get(i);
 				DataType dt = paramInfo.getDataType();
 				VariableStorage storage = paramInfo.getStorage();
+				signatureTransformed |= storage.isAutoStorage();
 				paramInfo.setFormalDataType(dt);
 				paramInfo.setStorage(storage.clone(program));
-				signatureTransformed = true;
 			}
 		}
 		catch (InvalidInputException e) {