diff --git a/datadog_lambda/config.py b/datadog_lambda/config.py
index 4458bd9a..ce4924af 100644
--- a/datadog_lambda/config.py
+++ b/datadog_lambda/config.py
@@ -141,6 +141,11 @@ def _reset(self):
         "enabled" if config.fips_mode_enabled else "not enabled",
     )
 
+# Remote configuration relies on /dev/shm which is unavailable in Lambda.
+# Disable it before ddtrace loads to avoid the shared-memory warning.
+if "DD_REMOTE_CONFIGURATION_ENABLED" not in os.environ:
+    os.environ["DD_REMOTE_CONFIGURATION_ENABLED"] = "false"
+
 # disable css to prevent double counting in lambda
 os.environ["DD_TRACE_STATS_COMPUTATION_ENABLED"] = "false"