diff --git a/package/base-files/Makefile b/package/base-files/Makefile
index bb88d5d32d..441d394288 100644
--- a/package/base-files/Makefile
+++ b/package/base-files/Makefile
@@ -23,9 +23,6 @@ ifneq ($(DUMP),1)
   ifneq ($(wildcard $(PLATFORM_DIR)/base-files-$(PROFILE) $(PLATFORM_SUBDIR)/base-files-$(PROFILE)),)
     TARGET:=$(TARGET)-$(PROFILE)
   endif
-  ifneq ($(findstring $(ARCH) , mips64 x86_64 ),)
-    LIB_SUFFIX:=64
-  endif
 endif
 
 define Package/base-files
diff --git a/rules.mk b/rules.mk
index 114b16ce3a..abb961e7de 100644
--- a/rules.mk
+++ b/rules.mk
@@ -122,6 +122,10 @@ endif
 LIBRPC=-lrpc
 LIBRPC_DEPENDS=+librpc
 
+ifneq ($(findstring $(ARCH) , mips64 x86_64 ),)
+  LIB_SUFFIX:=64
+endif
+
 ifndef DUMP
   ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
     -include $(TOOLCHAIN_DIR)/info.mk