diff --git a/src/kernel/Makefile b/src/kernel/Makefile
index 29a8548..08ef5f3 100644
--- a/src/kernel/Makefile
+++ b/src/kernel/Makefile
@@ -7,7 +7,7 @@ CC := ${TARGET}-gcc
 SRC := $(shell find -type f -name '*.[cS]*')
 OBJ := $(patsubst %, %.o, $(basename $(basename $(SRC))))
 
-CFLAGS := -Wall -Wextra -pedantic -ffreestanding -mcmodel=large -std=c2x
+CFLAGS := -Wall -Wextra -pedantic -ffreestanding -mcmodel=large -std=c2x -mno-red-zone
 CFLAGS += -ggdb -O0
 ASFLAGS += -ggdb
 CPPFLAGS += -nostdinc -I include -I /opt/sysroot/usr/include
diff --git a/src/libmittos/Makefile b/src/libmittos/Makefile
index 2eeca37..44f9a13 100644
--- a/src/libmittos/Makefile
+++ b/src/libmittos/Makefile
@@ -8,7 +8,7 @@ SRC := $(shell find -type f -name '*.[cS]*')
 OBJ := $(patsubst %, %.o, $(basename $(basename $(SRC))))
 HDR := $(shell find -type f -name '*.h')
 
-CFLAGS := -Wall -Wextra -pedantic -ffreestanding -mcmodel=large -std=c2x
+CFLAGS := -Wall -Wextra -pedantic -ffreestanding -mcmodel=large -std=c2x -mno-red-zone
 CFLAGS += -ggdb -O0
 ASFLAGS += -ggdb
 CPPFLAGS += -nostdinc -I include -I /opt/sysroot/usr/include
diff --git a/toolchain/build-musl.sh b/toolchain/build-musl.sh
index 5142119..f9e6362 100755
--- a/toolchain/build-musl.sh
+++ b/toolchain/build-musl.sh
@@ -21,7 +21,7 @@ rm -r *
     --prefix=${SYSROOT}/usr \
     --disable-shared \
     --enable-debug \
-    CFLAGS="-O0 -mcmodel=large"
+    CFLAGS="-O0 -mcmodel=large -mno-red-zone"
 
 make
 make install-headers