diff --git a/CMakeLists.txt b/CMakeLists.txt
index 26f182df02..d2435b81be 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -834,7 +834,7 @@ if(LYX_USE_QT MATCHES "QT6|QT5")
 		if (LYX_USE_QT MATCHES "QT6")
 			get_target_property(QT_MOC_EXECUTABLE Qt6::moc LOCATION)
 			find_package(Qt6 COMPONENTS Core5Compat REQUIRED)
-      list(REMOVE_ITEM Qt6Core5Compat_INCLUDE_DIRS ${_Qt6ZlibPrivate_OWN_INCLUDE_DIRS})
+			list(REMOVE_ITEM Qt6Core5Compat_INCLUDE_DIRS ${_Qt6ZlibPrivate_OWN_INCLUDE_DIRS})
 			include_directories(${Qt6Core5Compat_INCLUDE_DIRS})
 			set(QtCore5CompatLibrary Qt6::Core5Compat)
 			set(QtCore5CompatModule Core5Compat)