diff --git a/cstrike/cfg/sourcemod/zombiereloaded/zombiereloaded.cfg b/cstrike/cfg/sourcemod/zombiereloaded/zombiereloaded.cfg
index 0a64a61..cbe416e 100644
--- a/cstrike/cfg/sourcemod/zombiereloaded/zombiereloaded.cfg
+++ b/cstrike/cfg/sourcemod/zombiereloaded/zombiereloaded.cfg
@@ -337,6 +337,10 @@ zr_infect_consecutive_block "1"
 // Default: "1"
 zr_infect_weapons_drop "1"
 
+// The maximum allowed distance between a client and an attacker for a successful infection. [0.0 = Disabled]
+// Default: "80.0"
+zr_infect_max_distance "80.0"
+
 // Effects
 
 // Disabling this will disable the fireball, smoke cloud, and sparks in a more efficient way.
diff --git a/src/zr/cvars.inc b/src/zr/cvars.inc
index 4939f51..7916593 100644
--- a/src/zr/cvars.inc
+++ b/src/zr/cvars.inc
@@ -109,6 +109,7 @@ enum CvarsList
     Handle:CVAR_INFECT_MZOMBIE_MAX,
     Handle:CVAR_INFECT_MZOMBIE_COUNTDOWN,
     Handle:CVAR_INFECT_MZOMBIE_RESPAWN,
+    Handle:CVAR_INFECT_MAX_DISTANCE,
     Handle:CVAR_INFECT_EXPLOSION,
     Handle:CVAR_INFECT_FIREBALL,
     Handle:CVAR_INFECT_SMOKE,
@@ -327,6 +328,7 @@ CvarsCreate()
     g_hCvarsList[CVAR_INFECT_SPAWNTIME_MAX]             =    CreateConVar("zr_infect_spawntime_max",        "50.0",                             "Maximum time from the start of the round until picking the mother zombie(s).");
     g_hCvarsList[CVAR_INFECT_CONSECUTIVE_BLOCK]         =    CreateConVar("zr_infect_consecutive_block",    "1",                                "Prevent a player from being chosen as mother zombie two rounds in a row.");
     g_hCvarsList[CVAR_INFECT_WEAPONS_DROP]              =    CreateConVar("zr_infect_weapons_drop",         "1",                                "Force player to drop all weapons on infect, disabling this will strip weapons instead.");
+    g_hCvarsList[CVAR_INFECT_MAX_DISTANCE]              =    CreateConVar("zr_infect_max_distance",         "80.0",                             "The maximum allowed distance between a client and an attacker for a successful infection. [0.0 = Disabled]");
 
     // Effects
     g_hCvarsList[CVAR_INFECT_EXPLOSION]                 =    CreateConVar("zr_infect_explosion",            "1",                                "Disabling this will disable the fireball, smoke cloud, and sparks in a more efficient way.");
diff --git a/src/zr/damage.inc b/src/zr/damage.inc
index 9034aa6..dddba44 100644
--- a/src/zr/damage.inc
+++ b/src/zr/damage.inc
@@ -340,6 +340,25 @@ public ZRTools_Action:DamageOnTakeDamage(client, inflictor, attacker, Float:dama
             return immunityAction;
         }
 
+        // Check if distance between clients is too high. (Anti lagcompensation / longknife)
+        new Float:maxDistance = GetConVarFloat(g_hCvarsList[CVAR_INFECT_MAX_DISTANCE]);
+        if (maxDistance != 0.0)
+        {
+            new Float:clientPosition[3];
+            new Float:attackerPosition[3];
+
+            GetClientAbsOrigin(client, clientPosition);
+            GetClientAbsOrigin(attacker, attackerPosition);
+
+            new Float:distance = GetVectorDistance(clientPosition, attackerPosition);
+
+            // Block infection if distance is higher than allowed.
+            if (distance > maxDistance)
+            {
+                return Plugin_Handled;
+            }
+        }
+
         // Client is about to be infected, re-add HP so they aren't killed by
         // knife. But only do this when immunity mode is disabled.
         if (ClassGetImmunityMode(client) == Immunity_None)