diff --git a/pkgs/by-name/si/simpleDBus/package.nix b/pkgs/by-name/si/simpledbus/package.nix
similarity index 81%
rename from pkgs/by-name/si/simpleDBus/package.nix
rename to pkgs/by-name/si/simpledbus/package.nix
index 672b85ee54c9..1c1b91098107 100644
--- a/pkgs/by-name/si/simpleDBus/package.nix
+++ b/pkgs/by-name/si/simpledbus/package.nix
@@ -8,7 +8,7 @@
   lib,
 }:
 stdenv.mkDerivation (finalAttrs: {
-  pname = "simpleDBus";
+  pname = "simpledbus";
 
   version = "0.10.4";
 
@@ -40,7 +40,9 @@ stdenv.mkDerivation (finalAttrs: {
   meta = {
     description = "C++ wrapper for libdbus-1";
     homepage = "https://github.com/OpenBluetoothToolbox/SimpleBLE";
-    license = lib.licenses.gpl3Only;
+    # SimpleBLE (which SimpleDBus is part of) is under the Business Source License 1.1 (BUSL-1.1)
+    # since version 0.9.0
+    license = lib.licenses.bsl11;
     platforms = lib.platforms.linux;
     maintainers = with lib.maintainers; [ aciceri ];
   };
diff --git a/pkgs/by-name/zm/zmkBATx/package.nix b/pkgs/by-name/zm/zmkBATx/package.nix
index dbd2bc288d25..d600789f71b9 100644
--- a/pkgs/by-name/zm/zmkBATx/package.nix
+++ b/pkgs/by-name/zm/zmkBATx/package.nix
@@ -6,7 +6,7 @@
   pkg-config,
   dbus,
   simpleBluez,
-  simpleDBus,
+  simpledbus,
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "zmkBATx";
@@ -31,7 +31,7 @@ stdenv.mkDerivation (finalAttrs: {
     qt6.qtconnectivity
     dbus.lib
     simpleBluez
-    simpleDBus
+    simpledbus
   ];
 
   postPatch = ''
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 307ac57ead16..828c2207e76c 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1726,6 +1726,7 @@ mapAliases {
   siduck76-st = throw "'siduck76-st' has been renamed to/replaced by 'st-snazzy'"; # Converted to throw 2025-10-27
   sierra-breeze-enhanced = throw "'sierra-breeze-enhanced' has been removed, as it is only compatible with Plasma 5, which is EOL"; # Added 2025-08-20
   signal-desktop-source = throw "'signal-desktop-source' has been renamed to/replaced by 'signal-desktop'"; # Converted to throw 2025-10-27
+  simpleDBus = warnAlias "'simpleDBus' has been renamed to 'simpledbus'" simpledbus; # Added 2026-02-12
   simplesamlphp = throw "'simplesamlphp' was removed because it was unmaintained in nixpkgs"; # Added 2025-10-17
   simpleTpmPk11 = warnAlias "'simpleTpmPk11' has been renamed to 'simple-tpm-pk11'" simple-tpm-pk11; # Added 2026-02-12
   sioclient = throw "'sioclient' has been removed as it is no longer used by freedv, and doesn't build with newer asio"; # Added 2025-12-03