1 files changed, 1 insertions, 1 deletions
diff --git a/apt/auth.py b/apt/auth.py
index 97f9d578..d6b1d97f 100644
--- a/apt/auth.py
+++ b/apt/auth.py
@@ -153,8 +153,8 @@ def add_key(content, wait=True):
                             stdout=subprocess.PIPE,
                             stderr=subprocess.STDOUT,
                             universal_newlines=True)
-    proc = subprocess.Popen(cmd)
     proc.stdin.write(content)
+    proc.stdin.close()
     if wait:
         _wait_and_raise(proc)
     else: