diff --git a/benchmarks/Makefile b/benchmarks/Makefile
index d38f8aff1..78651f665 100644
--- a/benchmarks/Makefile
+++ b/benchmarks/Makefile
@@ -50,7 +50,7 @@ bmarks = \
 
 RISCV_PREFIX ?= riscv$(XLEN)-unknown-elf-
 RISCV_GCC ?= $(RISCV_PREFIX)gcc
-RISCV_GCC_OPTS ?= -DPREALLOCATE=1 -mcmodel=medany -static -std=gnu99 -O2 -ffast-math -fno-common -fno-builtin-printf -fno-tree-loop-distribute-patterns -march=rv$(XLEN)gcv -mabi=$(ABI)
+RISCV_GCC_OPTS ?= -DPREALLOCATE=1 -mcmodel=medany -static -std=gnu99 -O2 -ffast-math -fno-common -fno-builtin-printf -fno-tree-loop-distribute-patterns -Wno-implicit-int -Wno-implicit-function-declaration -march=rv$(XLEN)gcv -mabi=$(ABI)
 RISCV_LINK ?= $(RISCV_GCC) -T $(src_dir)/common/test.ld $(incs)
 RISCV_LINK_OPTS ?= -static -nostdlib -nostartfiles -lm -lgcc -T $(src_dir)/common/test.ld
 RISCV_OBJDUMP ?= $(RISCV_PREFIX)objdump --disassemble-all --disassemble-zeroes --section=.text --section=.text.startup --section=.text.init --section=.data