diff --git a/CMakeLists.txt b/CMakeLists.txt
index 97a9b9d0..5b62fea2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,10 +11,15 @@ project(QtImageFormats
     LANGUAGES CXX C
 )
 
-find_package(Qt6 ${PROJECT_VERSION} CONFIG REQUIRED COMPONENTS BuildInternals Core)
-find_package(Qt6 ${PROJECT_VERSION} QUIET CONFIG OPTIONAL_COMPONENTS Gui)
+find_package(Qt6 ${PROJECT_VERSION} CONFIG REQUIRED COMPONENTS BuildInternals)
+
+# This should be called as early as possible, just after find_package(BuildInternals) where it is
+# defined.
 qt_internal_project_setup()
 
+find_package(Qt6 ${PROJECT_VERSION} CONFIG REQUIRED COMPONENTS Core)
+find_package(Qt6 ${PROJECT_VERSION} QUIET CONFIG OPTIONAL_COMPONENTS Gui)
+
 if(NOT TARGET Qt::Gui)
     message(NOTICE "Skipping the build as the condition \"TARGET Qt::Gui\" is not met.")
     return()