diff --git a/external/redland/ExternalProject_raptor.mk b/external/redland/ExternalProject_raptor.mk
index 259f87d2dc11..80fe12117be1 100644
--- a/external/redland/ExternalProject_raptor.mk
+++ b/external/redland/ExternalProject_raptor.mk
@@ -35,6 +35,7 @@ $(call gb_ExternalProject_get_state_target,raptor,build):
 		    $(if $(filter LINUX FREEBSD,$(OS)),$(strip -Wl,-z,origin -Wl,-rpath,\$$$$ORIGIN -Wl,-rpath-link,$(INSTROOT)/$(LIBO_URE_LIB_FOLDER))) \
 		    $(if $(SYSBASE),$(if $(filter LINUX SOLARIS,$(OS)),-L$(SYSBASE)/lib -L$(SYSBASE)/usr/lib -lpthread -ldl)))' \
 		CPPFLAGS="$(if $(SYSBASE),-I$(SYSBASE)/usr/include) $(gb_EMSCRIPTEN_CPPFLAGS)" \
+		ICU_LIBS='$(if $(filter-out MACOSX,$(OS)),$(ICU_LIBS))' \
 		$(gb_RUN_CONFIGURE) ./configure --disable-gtk-doc \
 			--enable-parsers="rdfxml ntriples turtle trig guess rss-tag-soup" \
 			--without-www \