diff --git a/src/zombiereloaded.sp b/src/zombiereloaded.sp
index 6355b23..dd26bbf 100644
--- a/src/zombiereloaded.sp
+++ b/src/zombiereloaded.sp
@@ -142,8 +142,12 @@ public OnPluginStart()
     // ======================================================================
     
     CreateConVar("gs_zombiereloaded_version", VERSION, "[ZR] Current version of this plugin", FCVAR_PLUGIN|FCVAR_SPONLY|FCVAR_UNLOGGED|FCVAR_DONTRECORD|FCVAR_REPLICATED|FCVAR_NOTIFY);
-    CreateConVar("zombie_version", VERSION, "Zombie:Reloaded Version", FCVAR_PLUGIN|FCVAR_SPONLY|FCVAR_UNLOGGED|FCVAR_DONTRECORD|FCVAR_REPLICATED|FCVAR_NOTIFY);
-    CreateConVar("zombie_enabled", "1", "Not synced with zr_enable", FCVAR_PLUGIN|FCVAR_SPONLY|FCVAR_UNLOGGED|FCVAR_DONTRECORD|FCVAR_REPLICATED|FCVAR_NOTIFY);
+    
+    // Create zombie_version variable if specified.
+    if (GetConVarBool(g_hCvarsList[CVAR_ENABLE_ZM_VERSION_VAR]))
+    {
+        CreateConVar("zombie_version", VERSION, "Zombie:Reloaded Version", FCVAR_PLUGIN|FCVAR_SPONLY|FCVAR_UNLOGGED|FCVAR_DONTRECORD|FCVAR_REPLICATED|FCVAR_NOTIFY);
+    }
     
     // ======================================================================
     
diff --git a/src/zr/cvars.inc b/src/zr/cvars.inc
index 30cbe88..1f3f7f0 100644
--- a/src/zr/cvars.inc
+++ b/src/zr/cvars.inc
@@ -15,6 +15,7 @@
 enum CvarsList
 {
     Handle:CVAR_ENABLE,
+    Handle:CVAR_ENABLE_ZM_VERSION_VAR,
     Handle:CVAR_LOG,
     Handle:CVAR_LOGFLAGS,
     Handle:CVAR_CLASSES_SPAWN,
@@ -120,6 +121,7 @@ CvarsInit()
 	// ===========================
 	
     g_hCvarsList[CVAR_ENABLE]                    =    CreateConVar("zr_enable", "1", "");
+    g_hCvarsList[CVAR_ENABLE_ZM_VERSION_VAR]     =    CreateConVar("zr_enable_zm_version_var", "1", "Enable zombie_version variable for compatibility with ZombieMod server filters.");
     
     // ===========================
 	// Log (core)