diff --git a/optionals/compat_sog/CfgWeapons/helmets.hpp b/optionals/compat_sog/CfgWeapons/helmets.hpp
index 69bc30adcc..8edc6e2ac7 100644
--- a/optionals/compat_sog/CfgWeapons/helmets.hpp
+++ b/optionals/compat_sog/CfgWeapons/helmets.hpp
@@ -21,6 +21,13 @@ class vn_b_helmet_sph4_02_01: vn_b_headgear_base {
 class vn_b_helmet_t56_01_01: vn_b_headgear_base {
     HEARING_PROTECTION_VICCREW;
 };
+class vn_b_helmet_svh4_01_01: vn_b_headgear_base {
+    HEARING_PROTECTION_VICCREW;
+};
+class vn_b_helmet_svh4_02_01: vn_b_headgear_base {
+    HEARING_PROTECTION_VICCREW;
+    ACE_Protection = 1;
+};
 
 class vn_o_headgear_base;
 class vn_o_helmet_tsh3_01: vn_o_headgear_base {