diff --git a/oracle/src/oracleimporter.cpp b/oracle/src/oracleimporter.cpp
index 7b27b2d7d..324315304 100644
--- a/oracle/src/oracleimporter.cpp
+++ b/oracle/src/oracleimporter.cpp
@@ -23,7 +23,7 @@ OracleImporter::OracleImporter(QObject *parent) : QObject(parent)
 {
 }
 
-CardSet::Priority OracleImporter::getSetPriority(QString &setType, QString &shortName)
+static CardSet::Priority getSetPriority(const QString &setType, const QString &shortName)
 {
     if (!setTypePriorities.contains(setType.toLower())) {
         qDebug() << "warning: Set type" << setType << "unrecognized for prioritization";
diff --git a/oracle/src/oracleimporter.h b/oracle/src/oracleimporter.h
index 02a797115..2e74db7d3 100644
--- a/oracle/src/oracleimporter.h
+++ b/oracle/src/oracleimporter.h
@@ -150,7 +150,6 @@ signals:
 
 public:
     explicit OracleImporter(QObject *parent = nullptr);
-    CardSet::Priority getSetPriority(QString &setType, QString &shortName);
     bool readSetsFromByteArray(const QByteArray &data);
     int startImport();
     bool saveToFile(const QString &fileName, const QString &sourceUrl, const QString &sourceVersion);