ifneq ($(findstring 86, $(cpu_arch)), )
MULTIARCHSRCS = hardnested/hardnested_bf_core.c hardnested/hardnested_bitarray_core.c
endif
-ifneq ($(findstring 64, $(cpu_arch)), )
+ifneq ($(findstring amd64, $(cpu_arch)), )
MULTIARCHSRCS = hardnested/hardnested_bf_core.c hardnested/hardnested_bitarray_core.c
endif
ifeq ($(MULTIARCHSRCS), )