diff --git a/pull-debian-debdiff b/pull-debian-debdiff
index 3f4bf63..c8fafdd 100755
--- a/pull-debian-debdiff
+++ b/pull-debian-debdiff
@@ -52,7 +52,7 @@ def pull(package, version, unpack=False):
     urls.append(dsc_url(DEFAULT_DEBIAN_MIRROR, 'main', package, version))
 
     for url in urls:
-        cmd = ('dget', '-u' + 'x' if unpack else 'd', url)
+        cmd = ('dget', '-u' + ('x' if unpack else 'd'), url)
         Logger.command(cmd)
         p = subprocess.call(cmd)
         if p == 0:
diff --git a/pull-lp-source b/pull-lp-source
index e2a6201..c98de8f 100755
--- a/pull-lp-source
+++ b/pull-lp-source
@@ -100,7 +100,7 @@ if __name__ == '__main__':
     Logger.normal('Fetching the source for %s from %s (%s)...',
                   package, release.capitalize(), pocket)
     for url in urls:
-        cmd = ('dget', '-u' + 'd' if options.download_only else 'x', url)
+        cmd = ('dget', '-u' + ('d' if options.download_only else 'x'), url)
         Logger.command(cmd)
         r = subprocess.call(cmd)
         if r == 0: