diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6c4a69231..95f568dc5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,7 +20,7 @@ ign_configure_project(VERSION_SUFFIX)
 # Set project-specific options
 #============================================================================
 
-option(USE_UNOFFICAL_OGRE_VERSIONS "Accept unsupported Ogre versions in the build" OFF)
+option(USE_UNOFFICIAL_OGRE_VERSIONS "Accept unsupported Ogre versions in the build" OFF)
 
 #============================================================================
 # Search for project-specific dependencies
@@ -63,8 +63,8 @@ list(APPEND ign_ogre_components "RTShaderSystem" "Terrain" "Overlay")
 
 # Ogre versions greater than 1.9 are not officialy supported.
 # Display a warning for the users on this setup unless they provide
-# USE_UNOFFICAL_OGRE_VERSIONS flag
-if (NOT USE_UNOFFICAL_OGRE_VERSIONS)
+# USE_UNOFFICIAL_OGRE_VERSIONS flag
+if (NOT USE_UNOFFICIAL_OGRE_VERSIONS)
   # Only for checking the ogre version
   ign_find_package(IgnOGRE VERSION 1.10 QUIET)
 
diff --git a/Changelog.md b/Changelog.md
index 00a2876aa..cb528f77f 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -3,7 +3,7 @@
 ### Ignition Rendering 3.x.x (2021-XX-XX)
 
 1. CMake warning on Ogre versions that are not officially supported.
-   To disable the new warning, it is enough to enable the cmake option USE_UNOFFICAL_OGRE_VERSIONS
+   To disable the new warning, it is enough to enable the cmake option USE_UNOFFICIAL_OGRE_VERSIONS
     * [Pull request 376](https://github.com/ignitionrobotics/ign-rendering/pull/376)
 
 ### Ignition Rendering 3.5.0 (2021-05-25)