diff --git a/arch/csky/kernel/vdso/Makefile b/arch/csky/kernel/vdso/Makefile
index 299e4e41ebc5..ddf784a62c11 100644
--- a/arch/csky/kernel/vdso/Makefile
+++ b/arch/csky/kernel/vdso/Makefile
@@ -58,13 +58,3 @@ quiet_cmd_vdsold = VDSOLD  $@
 # that contains the same symbols at the same offsets.
 quiet_cmd_so2s = SO2S    $@
       cmd_so2s = $(NM) -D $< | $(srctree)/$(src)/so2s.sh > $@
-
-# install commands for the unstripped file
-quiet_cmd_vdso_install = INSTALL $@
-      cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
-
-vdso.so: $(obj)/vdso.so.dbg
-	@mkdir -p $(MODLIB)/vdso
-	$(call cmd,vdso_install)
-
-vdso_install: vdso.so