diff --git a/src/cvars.c b/src/cvars.c
index 8f56c15..3e62523 100644
--- a/src/cvars.c
+++ b/src/cvars.c
@@ -4,9 +4,11 @@
 #include "include/globals.h"
 
 DECL_CVAR(bhop);
+DECL_CVAR(esp);
 
 bool cvars_init(void) {
     cv_bhop = REGISTER_CVAR("bhop", "1");
+    cv_esp  = REGISTER_CVAR("esp", "1");
 
     return true;
 }
diff --git a/src/include/cvars.h b/src/include/cvars.h
index f446b19..07a053c 100644
--- a/src/include/cvars.h
+++ b/src/include/cvars.h
@@ -30,6 +30,7 @@
 /*----------------------------------------------------------------------------*/
 
 DECL_CVAR_EXTERN(bhop);
+DECL_CVAR_EXTERN(esp);
 
 /*----------------------------------------------------------------------------*/