diff --git a/docs/shell/sync.rst b/docs/shell/sync.rst
index 2b348302cad00a582ab811a67d23bd68838a6ae4..dd740112f31a84c0c2b035f7fcb45e46ae07665c 100644
--- a/docs/shell/sync.rst
+++ b/docs/shell/sync.rst
@@ -86,7 +86,7 @@ Other values are acceptable for ``threshold``, but a small
 probably best: performances and accuracy may degrade for values much
 higher than ``10``.
 
-The default value for ``latency`` is ``150`` seconds. Whatever you
+The default value for ``latency`` is ``75`` seconds. Whatever you
 change it to, it should be at least long enough to include a few
 blocks' worth of the protocol's baking rate plus some network latency,
 but not so long that the node considers itself bootstrapped even
@@ -94,7 +94,7 @@ though it is many blocks away from the chain's head.
 
 A good value for ``latency`` is ``2`` to ``5`` times the time between
 blocks, plus a small delta for network delays. At the time of
-writing, the time between two consecutive blocks is ``30`` seconds
+writing, the time between two consecutive blocks is ``15`` seconds
 when the chain is healthy (see :doc:`the consensus algorithm
 <../active/consensus>`).
 
diff --git a/src/lib_shell_services/shell_limits.ml b/src/lib_shell_services/shell_limits.ml
index dc3af100fea3995bdeb30a983a866c676ab67cb5..83843b9bf82d56c23e727d5a8f560356bca42a74 100644
--- a/src/lib_shell_services/shell_limits.ml
+++ b/src/lib_shell_services/shell_limits.ml
@@ -205,7 +205,7 @@ let synchronisation_heuristic_encoding default_latency default_threshold =
 type chain_validator_limits = {synchronisation : synchronisation_limits}
 
 let default_chain_validator_limits =
-  {synchronisation = {latency = 150; threshold = 4}}
+  {synchronisation = {latency = 75; threshold = 4}}
 
 let chain_validator_limits_encoding =
   let open Data_encoding in