diff --git a/extras/Projucer/Source/Project/jucer_Project.cpp b/extras/Projucer/Source/Project/jucer_Project.cpp
index 4f07718ed0..08deb0902b 100644
--- a/extras/Projucer/Source/Project/jucer_Project.cpp
+++ b/extras/Projucer/Source/Project/jucer_Project.cpp
@@ -927,6 +927,7 @@ void Project::Item::setID (const String& newID)   { state.setProperty (Ids::ID,
 
 Drawable* Project::Item::loadAsImageFile() const
 {
+    const MessageManagerLock mml;
     return isValid() ? Drawable::createFromImageFile (getFile())
                      : nullptr;
 }