diff --git a/src/saveload/extended_ver_sl.cpp b/src/saveload/extended_ver_sl.cpp
index 7127faf7b6..aba7806945 100644
--- a/src/saveload/extended_ver_sl.cpp
+++ b/src/saveload/extended_ver_sl.cpp
@@ -45,6 +45,7 @@ std::vector<uint32> _sl_xv_discardable_chunk_ids;           ///< list of chunks
 static const uint32 _sl_xv_slxi_chunk_version = 0;          ///< current version os SLXI chunk
 
 const SlxiSubChunkInfo _sl_xv_sub_chunk_infos[] = {
+	{ XSLFI_PROG_SIGS, XSCF_NULL, 1, 1, "programmable_signals", NULL, NULL, "SPRG" },
 	{ XSLFI_NULL, XSCF_NULL, 0, 0, NULL, NULL, NULL, NULL },// This is the end marker
 };
 
diff --git a/src/saveload/extended_ver_sl.h b/src/saveload/extended_ver_sl.h
index a7e9496944..c4c14c31ff 100644
--- a/src/saveload/extended_ver_sl.h
+++ b/src/saveload/extended_ver_sl.h
@@ -21,6 +21,7 @@
  */
 enum SlXvFeatureIndex {
 	XSLFI_NULL                          = 0,      ///< Unused value, to indicate that no extended feature test is in use
+	XSLFI_PROG_SIGS,                              ///< programmable signals patch
 
 	XSLFI_SIZE,                                   ///< Total count of features, including null feature
 };
diff --git a/src/table/settings.ini b/src/table/settings.ini
index 8cdd43a612..86a39d4617 100644
--- a/src/table/settings.ini
+++ b/src/table/settings.ini
@@ -1464,8 +1464,6 @@ cat      = SC_EXPERT
 base     = GameSettings
 var      = construction.maximum_signal_evaluations
 type     = SLE_UINT16
-from     = 200
-to       = SL_MAX_VERSION
 def      = 256
 min      = 64
 max      = 4096
@@ -1474,6 +1472,8 @@ str      = STR_CONFIG_SETTING_MAX_SIGNAL_EVALUATIONS
 strhelp  = STR_CONFIG_SETTING_MAX_SIGNAL_EVALUATIONS_HELPTEXT
 strval   = STR_JUST_COMMA
 cat      = SC_EXPERT
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_PROG_SIGS)
+patxname = ""programmable_signals.construction.maximum_signal_evaluations""
 
 ; previously ai-new setting.
 [SDT_NULL]