diff --git a/pkgs/applications/emulators/dosbox-staging/default.nix b/pkgs/applications/emulators/dosbox-staging/default.nix
index 233dffca405..62331bd6219 100644
--- a/pkgs/applications/emulators/dosbox-staging/default.nix
+++ b/pkgs/applications/emulators/dosbox-staging/default.nix
@@ -9,7 +9,7 @@
 , fluidsynth
 , glib
 , gtest
-, irr1
+, iir1
 , libGL
 , libGLU
 , libjack2
@@ -52,7 +52,7 @@ stdenv.mkDerivation (self: {
     alsa-lib
     fluidsynth
     glib
-    irr1
+    iir1
     libGL
     libGLU
     libjack2
diff --git a/pkgs/development/libraries/irr1/default.nix b/pkgs/development/libraries/iir1/default.nix
similarity index 97%
rename from pkgs/development/libraries/irr1/default.nix
rename to pkgs/development/libraries/iir1/default.nix
index 8740919ce3a..d277e14f567 100644
--- a/pkgs/development/libraries/irr1/default.nix
+++ b/pkgs/development/libraries/iir1/default.nix
@@ -5,7 +5,7 @@
 }:
 
 stdenv.mkDerivation rec {
-  pname = "irr1";
+  pname = "iir1";
   version = "1.9.4";
 
   src = fetchFromGitHub {
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index a19cd349b41..892bd933dfb 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -20774,7 +20774,7 @@ with pkgs;
 
   ip2location-c = callPackage ../development/libraries/ip2location-c { };
 
-  irr1 = callPackage ../development/libraries/irr1 { };
+  iir1 = callPackage ../development/libraries/iir1 { };
 
   irrlicht = if !stdenv.isDarwin then
     callPackage ../development/libraries/irrlicht { }