diff --git a/installsystems/image/source.py b/installsystems/image/source.py
index 579dc1897e3c2a034524c3b6365b09d846d5aded..e952dacd9ddc7198973c429bfcc1985611672631 100644
--- a/installsystems/image/source.py
+++ b/installsystems/image/source.py
@@ -175,8 +175,11 @@ class SourceImage(Image):
         Create packaged image
         '''
         # check if free to create script tarball
-        if exists(self.image_name) and force == False:
-            raise ISError("Tarball already exists. Remove it before")
+        if exists(self.image_name):
+            if force:
+                unlink(self.image_name)
+            else:
+                raise ISError("Tarball already exists. Remove it before")
         # register start time
         t0 = time()
         # check python scripts