diff --git a/launcher/ui/widgets/JavaSettingsWidget.cpp b/launcher/ui/widgets/JavaSettingsWidget.cpp
index 6efd3f581..77d673abb 100644
--- a/launcher/ui/widgets/JavaSettingsWidget.cpp
+++ b/launcher/ui/widgets/JavaSettingsWidget.cpp
@@ -171,6 +171,11 @@ void JavaSettingsWidget::setupUi()
                 m_verticalLayout->addSpacerItem(m_verticalSpacer);
             }
         });
+        connect(m_ui->javaPathTextBox, &QLineEdit::textChanged, [this](QString newValue) {
+            if (m_instance->settings()->get("JavaPath").toString() != newValue) {
+                m_instance->settings()->set("AutomaticJava", false);
+            }
+        });
     }
     m_verticalLayout->addWidget(m_autoJavaGroupBox);