diff --git a/eigen3/include/CMakeLists.txt b/eigen3/include/CMakeLists.txt
index 992a1312e..a35a0475e 100644
--- a/eigen3/include/CMakeLists.txt
+++ b/eigen3/include/CMakeLists.txt
@@ -1,2 +1 @@
 add_subdirectory(gz)
-install(DIRECTORY ignition DESTINATION ${GZ_INCLUDE_INSTALL_DIR_FULL})
diff --git a/eigen3/include/ignition/math/eigen3.hh b/eigen3/include/ignition/math/eigen3.hh
deleted file mode 100644
index f0a14b78e..000000000
--- a/eigen3/include/ignition/math/eigen3.hh
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Copyright (C) 2017 Open Source Robotics Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#include <gz/math/eigen3.hh>
-#include <ignition/math/config.hh>
diff --git a/eigen3/include/ignition/math/eigen3/Conversions.hh b/eigen3/include/ignition/math/eigen3/Conversions.hh
deleted file mode 100644
index bab4a3f07..000000000
--- a/eigen3/include/ignition/math/eigen3/Conversions.hh
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Copyright (C) 2022 Open Source Robotics Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#include <gz/math/eigen3/Conversions.hh>
-#include <ignition/math/config.hh>
diff --git a/eigen3/include/ignition/math/eigen3/Util.hh b/eigen3/include/ignition/math/eigen3/Util.hh
deleted file mode 100644
index 962463fa3..000000000
--- a/eigen3/include/ignition/math/eigen3/Util.hh
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Copyright (C) 2022 Open Source Robotics Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#include <gz/math/eigen3/Util.hh>
-#include <ignition/math/config.hh>