diff --git a/Makefile b/Makefile
index 0f687a6..1d12793 100644
--- a/Makefile
+++ b/Makefile
@@ -82,7 +82,7 @@ clean:
 	find . -type f -name '*.[od(elf)]' -exec rm -f {} +
 
 format:
-	find . -type f -name '*.[ch]' -exec clang-format -i {} +
+	find kern -type f -name '*.[ch]' -exec clang-format -i {} \;
 
 TOOLCHAIN_DIR := toolchain
 
diff --git a/README.md b/README.md
index c2a1e05..cc20fbe 100644
--- a/README.md
+++ b/README.md
@@ -75,6 +75,9 @@ make distclean # Wipes the above, but also removes toolchain
 | `mip`       | Machine Interrupt Pending  | Machine           | Indicates pending interrupts.                                               |
 | `mie`       | Machine Interrupt Enable   | Machine           | Controls which interrupts are enabled.                                      |
 
+### TODO
+- Kassert, some macro in the form of `ASSERT(condition, "This went wrong")`
+
 ### Libc Implementations
 
 [uClibc](https://uclibc.org/)
diff --git a/kern/kalloc.c b/kern/kalloc.c
index 88238ee..dead607 100644
--- a/kern/kalloc.c
+++ b/kern/kalloc.c
@@ -46,6 +46,7 @@ void kfree(void *pa) {
     if (((u64)pa % PGSIZE) != 0 || (char *)pa < kernel_end || (u64)pa >= PHYSTOP)
         PANIC("kfree");
 
+    // TODO: Kconfig this
     // Fill with junk to catch dangling refs.
     memset(pa, 1, PGSIZE);
 
diff --git a/kern/libkern/stddef.h b/kern/libkern/stddef.h
index ab8a2b5..0d70dea 100644
--- a/kern/libkern/stddef.h
+++ b/kern/libkern/stddef.h
@@ -2,8 +2,7 @@
 #define STDDEF_H
 
 #ifndef NULL
-#define NULL ((void*)0)
+#define NULL ((void *)0)
 #endif
 
 #endif // STDDEF_H
-
diff --git a/kern/libkern/stdio.c b/kern/libkern/stdio.c
index 61b740a..c50a0d6 100644
--- a/kern/libkern/stdio.c
+++ b/kern/libkern/stdio.c
@@ -22,7 +22,7 @@ static int stdout_puts(char *s, int len, void *unused) {
 int kprintf(const char *restrict fmt, ...) {
     va_list ap;
     va_start(ap, fmt);
-    int ret = kvprintf(fmt, &ap);
+    int ret = kvprintf(fmt, ap);
     va_end(ap);
     return ret;
 }