diff --git a/far/changelog b/far/changelog
index 61583b78bf..88b2d4e06b 100644
--- a/far/changelog
+++ b/far/changelog
@@ -1,3 +1,8 @@
+--------------------------------------------------------------------------------
+drkns 2024-12-11 20:43:27+00:00 - build 6401
+
+1. Correction of 5646.1.
+
 --------------------------------------------------------------------------------
 drkns 2024-12-11 19:02:47+00:00 - build 6400
 
diff --git a/far/macroapi.cpp b/far/macroapi.cpp
index 657d3ad4f7..b30d3afc89 100644
--- a/far/macroapi.cpp
+++ b/far/macroapi.cpp
@@ -1018,7 +1018,11 @@ void KeyMacro::CallFar(intptr_t CheckCode, FarMacroCall* Data)
 							clipboard_mode::internal: clipboard_mode::system);
 						break;
 					case IMP_KEYNAMETOKEY:
-						if (Data->Count > 1) api.PassValue(KeyNameToKey(Data->Values[1].String));
+						if (Data->Count > 1)
+						{
+							const auto Key = KeyNameToKey(Data->Values[1].String);
+							api.PassValue(Key? Key : -1);
+						}
 						break;
 					case IMP_KEYTOTEXT:
 						if (Data->Count > 1)
diff --git a/far/vbuild.m4 b/far/vbuild.m4
index 5919dcef3a..b25aecf8c4 100644
--- a/far/vbuild.m4
+++ b/far/vbuild.m4
@@ -1 +1 @@
-6400
+6401