1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 8576e6f..053c357 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 ARCH = arm-none-eabi
 CC = $(ARCH)-gcc
-CFLAGS = -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -std=c23 -g -O0 -ffreestanding -Wpedantic -Wall -Wextra -Werror
+CFLAGS = -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -std=c99 -g -O0 -ffreestanding -Wpedantic -Wall -Wextra -Werror
 LDFLAGS = -Tlink.ld -nostdlib
 
 SRCDIR = src