diff --git a/src/main/java/eu/siacs/conversations/persistance/FileBackend.java b/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
index 349e18c70..35b836a7a 100644
--- a/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
+++ b/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
@@ -493,7 +493,7 @@ public class FileBackend {
 		return calcSampleSize(options, size);
 	}
 
-	private int calcSampleSize(BitmapFactory.Options options, int size) {
+	public static int calcSampleSize(BitmapFactory.Options options, int size) {
 		int height = options.outHeight;
 		int width = options.outWidth;
 		int inSampleSize = 1;