in src/com/jetbrains/php/tools/quality/psalm/PsalmOptionsPanel.java [80:87]
public boolean isModified() {
PsalmOptionsConfiguration configuration = PsalmOptionsConfiguration.getInstance(myProject);
if (!StringUtil.equals(myConfigPathTextField.getText(), configuration.getConfig())) return true;
if (myShowInfoJBCheckBox.isSelected() != configuration.isShowInfo()) return true;
if (myFindUnusedCheckbox.isSelected() != configuration.isFindUnusedCode()) return true;
if (myFindUnusedSuppressCheckbox.isSelected() != configuration.isFindUnusedSuppress()) return true;
return false;
}