diff --git a/package/qt6/qt6base/qt6base.mk b/package/qt6/qt6base/qt6base.mk
index 27fb673504..7b296fc99b 100644
--- a/package/qt6/qt6base/qt6base.mk
+++ b/package/qt6/qt6base/qt6base.mk
@@ -101,6 +101,13 @@ endef
 # Conditional blocks below are ordered by alphabetic ordering of the
 # BR2_PACKAGE_* option.
 
+ifeq ($(BR2_PACKAGE_ICU),y)
+QT6BASE_CONF_OPTS += -DFEATURE_icu=ON
+QT6BASE_DEPENDENCIES += icu
+else
+QT6BASE_CONF_OPTS += -DFEATURE_icu=OFF
+endif
+
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 QT6BASE_CONF_OPTS += -DINPUT_openssl=yes
 QT6BASE_DEPENDENCIES += openssl