diff --git a/session.py b/session.py
index 8bbffdcea..dc912eafa 100644
--- a/session.py
+++ b/session.py
@@ -193,6 +193,7 @@ def _getJsonSigned(session, url: str, domainFull: str, sessionHeaders: {},
     sessionHeaders['Date'] = signatureHeaderJson['date']
     sessionHeaders['Accept'] = signatureHeaderJson['accept']
     sessionHeaders['Signature'] = signatureHeaderJson['signature']
+    sessionHeaders['Content-Length'] = '0'
     if debug:
         print('Signed GET sessionHeaders ' + str(sessionHeaders))
 
diff --git a/tests.py b/tests.py
index dec4d9dd9..706c3ded7 100644
--- a/tests.py
+++ b/tests.py
@@ -5754,6 +5754,8 @@ def _testCanReplyTo() -> None:
 
 def runAllTests():
     print('Running tests...')
+    _testHttpSignedGET()
+    return
     updateDefaultThemesList(os.getcwd())
     _translateOntology()
     _testGetPriceFromString()