diff --git a/examples/build_system/cmake/cpu/rv32imac-ilp32.cmake b/examples/build_system/cmake/cpu/rv32imac-ilp32.cmake
index 584d90519..8c2538cee 100644
--- a/examples/build_system/cmake/cpu/rv32imac-ilp32.cmake
+++ b/examples/build_system/cmake/cpu/rv32imac-ilp32.cmake
@@ -1,13 +1,13 @@
 if (TOOLCHAIN STREQUAL "gcc")
   set(TOOLCHAIN_COMMON_FLAGS
-    -march=rv32imac_zicsr
+    -march=rv32imac_zicsr_zifencei
     -mabi=ilp32
     )
   set(FREERTOS_PORT GCC_RISC_V CACHE INTERNAL "")
 
 elseif (TOOLCHAIN STREQUAL "clang")
   set(TOOLCHAIN_COMMON_FLAGS
-    -march=rv32imac_zicsr
+    -march=rv32imac_zicsr_zifencei
     -mabi=ilp32
     )
   set(FREERTOS_PORT GCC_RISC_V CACHE INTERNAL "")
diff --git a/examples/build_system/make/cpu/rv32imac-ilp32.mk b/examples/build_system/make/cpu/rv32imac-ilp32.mk
index 19c322ebc..a7b2258d7 100644
--- a/examples/build_system/make/cpu/rv32imac-ilp32.mk
+++ b/examples/build_system/make/cpu/rv32imac-ilp32.mk
@@ -1,11 +1,11 @@
 ifeq ($(TOOLCHAIN),gcc)
   CFLAGS += \
-    -march=rv32imac_zicsr \
+    -march=rv32imac_zicsr_zifencei \
     -mabi=ilp32 \
 
 else ifeq ($(TOOLCHAIN),clang)
   CFLAGS += \
-    -march=rv32imac_zicsr \
+    -march=rv32imac_zicsr_zifencei \
     -mabi=ilp32 \
 
 else ifeq ($(TOOLCHAIN),iar)