diff --git a/theme.cpp b/theme.cpp
index f96888b14..08f8f7871 100644
--- a/theme.cpp
+++ b/theme.cpp
@@ -53,7 +53,7 @@ QString Theme::themeName() const
     return d->themeName;
 }
 
-QString Theme::imagePath(const QString& name)
+QString Theme::imagePath(const QString& name) const
 {
     return KStandardDirs::locate("data", "desktoptheme/" + d->themeName
                                           + "/" + name + ".svg");
diff --git a/theme.h b/theme.h
index 1093d0163..fbc276738 100644
--- a/theme.h
+++ b/theme.h
@@ -35,7 +35,7 @@ class KDE_EXPORT Theme : public QObject
         ~Theme();
 
         QString themeName() const;
-        QString imagePath(const QString& name);
+        QString imagePath(const QString& name) const;
 
     signals:
         void changed();