diff --git a/monkey/common/agent_configuration/agent_configuration.py b/monkey/common/agent_configuration/agent_configuration.py
index 1fb99f868..7b780096f 100644
--- a/monkey/common/agent_configuration/agent_configuration.py
+++ b/monkey/common/agent_configuration/agent_configuration.py
@@ -1,6 +1,6 @@
 from typing import Tuple
 
-from pydantic import PositiveFloat
+from pydantic import confloat
 
 from common.base_models import MutableInfectionMonkeyBaseModel
 
@@ -12,7 +12,7 @@ from .agent_sub_configurations import (
 
 
 class AgentConfiguration(MutableInfectionMonkeyBaseModel):
-    keep_tunnel_open_time: PositiveFloat
+    keep_tunnel_open_time: confloat(ge=0)
     custom_pbas: CustomPBAConfiguration
     post_breach_actions: Tuple[PluginConfiguration, ...]
     credential_collectors: Tuple[PluginConfiguration, ...]
diff --git a/monkey/tests/unit_tests/common/agent_configuration/test_agent_configuration.py b/monkey/tests/unit_tests/common/agent_configuration/test_agent_configuration.py
index 3431b980d..b90490906 100644
--- a/monkey/tests/unit_tests/common/agent_configuration/test_agent_configuration.py
+++ b/monkey/tests/unit_tests/common/agent_configuration/test_agent_configuration.py
@@ -252,7 +252,16 @@ def test_agent_configuration():
     assert config_dict == AGENT_CONFIGURATION
 
 
-def test_agent_configuration__negative_keep_tunnel_open_time():
+def test_agent_configuration__negative_keep_tunnel_open_time_zero():
+    keep_tunnel_open_time_zero_configuration = AGENT_CONFIGURATION.copy()
+    keep_tunnel_open_time_zero_configuration["keep_tunnel_open_time"] = 0
+
+    ac = AgentConfiguration(**keep_tunnel_open_time_zero_configuration)
+
+    assert ac.keep_tunnel_open_time == 0
+
+
+def test_agent_configuration__keep_tunnel_open_time():
     negative_keep_tunnel_open_time_configuration = AGENT_CONFIGURATION.copy()
     negative_keep_tunnel_open_time_configuration["keep_tunnel_open_time"] = -1