diff --git a/scripts/unpisi b/scripts/unpisi
index ee8efe3d..c58addf8 100755
--- a/scripts/unpisi
+++ b/scripts/unpisi
@@ -40,7 +40,8 @@ def main():
         print e
         sys.exit(1)
 
-    os.makedirs("install")
+    if not os.path.exists("install"):
+        os.makedirs("install")
 
     package.extract_pisi_files(".")
     package.extract_dir("comar", ".")