diff --git a/make/lo.mk b/make/lo.mk
index 6327241a..b332197f 100644
--- a/make/lo.mk
+++ b/make/lo.mk
@@ -16,6 +16,7 @@ LOADABLE_OBJ_HOOK            ?= LOADABLE_OBJECT_HOOK
 .PRECIOUS: %.cpp
 
 LOADABLE_OBJS                 = $(patsubst $(CPP_PREFIX)%,%,$(basename $(notdir $(wildcard $(TOOLS_DIR)/$(CPP_PREFIX)*.h))))
+LOADABLE_OBJS_O               = $(patsubst %.cpp,%.o,$(wildcard $(CPP_PREFIX)*.cpp))
 ifneq ($(TARGET),mingw)
 LOADABLE_OBJ_LIBS             = $(addprefix $(SO_PREFIX), $(addsuffix .so, $(LOADABLE_OBJS)))
 else
@@ -31,7 +32,7 @@ clean: clean.lo
 clean.lo: profclean
 	rm -f $(filter-out $(CPP_PREFIX)%.cpp,$(wildcard *.o *.cpp *.so *.done *.dll))
 
-$(SO_PREFIX)%.so $(SO_PREFIX)%.dll: %.o
+$(SO_PREFIX)%.so $(SO_PREFIX)%.dll: %.o $(LOADABLE_OBJS_O)
 	$(CPP) -shared $^ $(LDFLAGS) -o $@
 
 %.cpp: $(TOOLS_DIR)/$(CPP_PREFIX)%.h