diff --git a/src/experimental/iw6c/xsk/iw6c.hpp b/src/experimental/iw6c/xsk/iw6c.hpp
index e716167d..f3d8a81b 100644
--- a/src/experimental/iw6c/xsk/iw6c.hpp
+++ b/src/experimental/iw6c/xsk/iw6c.hpp
@@ -17,7 +17,7 @@
 namespace xsk::gsc::iw6c
 {
 
-constexpr std::uint16_t max_string_id = 0x0;
+constexpr std::uint16_t max_string_id = 0x8EFA;
 
 enum class opcode : std::uint8_t
 {
diff --git a/src/experimental/s1c/xsk/s1c.hpp b/src/experimental/s1c/xsk/s1c.hpp
index 99989b47..287735c5 100644
--- a/src/experimental/s1c/xsk/s1c.hpp
+++ b/src/experimental/s1c/xsk/s1c.hpp
@@ -17,7 +17,7 @@
 namespace xsk::gsc::s1c
 {
 
-constexpr std::uint16_t max_string_id = 0x0;
+constexpr std::uint16_t max_string_id = 0xA51D;
 
 enum class opcode : std::uint8_t
 {