diff --git a/lib/rapi/client.py b/lib/rapi/client.py
index 5423576c6c120a844b0807d084a81558d60afe2a..483f7289a48ce5da00c8e522b740e53e0fce24ae 100644
--- a/lib/rapi/client.py
+++ b/lib/rapi/client.py
@@ -351,7 +351,7 @@ class GanetiRapiClient(object):
 
     curl = self._curl
 
-    if content:
+    if content is not None:
       encoded_content = self._json_encoder.encode(content)
     else:
       encoded_content = ""