diff --git a/CMakeLists.txt b/CMakeLists.txt
index 39134d140..8dfd256c3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -116,10 +116,6 @@ OPTION ( ASSIMP_UBSAN
   "Enable Undefined Behavior sanitizer."
   OFF
 )
-OPTION ( ASSIMP_SYSTEM_IRRXML
-  "Use system installed Irrlicht/IrrXML library."
-  OFF
-)
 OPTION ( ASSIMP_BUILD_DOCS
   "Build documentation using Doxygen."
   OFF
@@ -451,11 +447,6 @@ IF( ASSIMP_BUILD_DOCS )
   ADD_SUBDIRECTORY(doc)
 ENDIF()
 
-# Look for system installed irrXML
-IF ( ASSIMP_SYSTEM_IRRXML )
-  FIND_PACKAGE( IrrXML REQUIRED )
-ENDIF()
-
 # Search for external dependencies, and build them from source if not found
 # Search for zlib
 IF(ASSIMP_HUNTER_ENABLED)