diff --git a/src/core/ResourceItem.cpp b/src/core/ResourceItem.cpp
index 7ac302d82..0d6e6f30c 100644
--- a/src/core/ResourceItem.cpp
+++ b/src/core/ResourceItem.cpp
@@ -172,7 +172,7 @@ ResourceItem::Type ResourceItem::guessType( void ) const
 		typeMap["jpeg"] = TypeImage;
 	}
 
-	const QString s = QFileInfo( fullName() ).completeSuffix().toLower();
+	const QString s = QFileInfo( name() ).completeSuffix().toLower();
 	QMap<QString, Type>::ConstIterator it = typeMap.find( s );
 	if( it != typeMap.end() )
 	{