diff --git a/kernel/GNUmakefile b/kernel/GNUmakefile
index e6014a6..dd5690e 100644
--- a/kernel/GNUmakefile
+++ b/kernel/GNUmakefile
@@ -37,7 +37,7 @@ LDFLAGS ?=
 
 # Internal C flags that should not be changed by the user.
 override CFLAGS +=       \
-    -std=c11             \
+    -std=gnu11           \
     -ffreestanding       \
     -fno-stack-protector \
     -fno-stack-check     \
diff --git a/kernel/kernel.c b/kernel/kernel.c
index 1b9b8e6..1991442 100644
--- a/kernel/kernel.c
+++ b/kernel/kernel.c
@@ -13,7 +13,7 @@ static volatile struct limine_terminal_request terminal_request = {
 
 static void done(void) {
     for (;;) {
-        __asm__("hlt");
+        asm ("hlt");
     }
 }