diff --git a/make/rules.mk b/make/rules.mk
index f0a52b2e..00cbb12f 100644
--- a/make/rules.mk
+++ b/make/rules.mk
@@ -181,10 +181,10 @@ strip.done: $(EXE_ALL)
 	$(CC) -M $(CPPFLAGS) $(DEPEND_CPPFLAGS) $< -o $@
 
 ifeq ($(LIBTYPE),shared)
-lib%.so: %.o # $(LIB_SO)
+$(SO_PREFIX)%.so: %.o # $(LIB_SO)
 	$(LD) -shared $(LDFLAGS) $^ -o $@
 else
-lib%.so: %.o
+$(SO_PREFIX)%.so: %.o
 	$(LD) $(LDFLAGS) $^ -o $@
 endif