diff --git a/kernel/info.c b/kernel/info.c
index 0759ba9..fbd328f 100644
--- a/kernel/info.c
+++ b/kernel/info.c
@@ -3,7 +3,8 @@
 
 #include <kernaux/assert.h>
 #include <kernaux/drivers/console.h>
-#include <kernaux/libc.h>
+
+#include <string.h>
 
 static bool cmdline_terminated(const char *s);
 
diff --git a/kernel/main.c b/kernel/main.c
index 2008c71..b5d80fe 100644
--- a/kernel/main.c
+++ b/kernel/main.c
@@ -9,7 +9,6 @@
 #include "elf.h"
 
 #include <kernaux/drivers/console.h>
-#include <kernaux/libc.h>
 #include <kernaux/multiboot2.h>
 #include <kernaux/pfa.h>
 
diff --git a/kernel/paging.c b/kernel/paging.c
index ad78948..cd22aba 100644
--- a/kernel/paging.c
+++ b/kernel/paging.c
@@ -2,7 +2,8 @@
 #include "panic.h"
 
 #include <kernaux/asm/i386.h>
-#include <kernaux/libc.h>
+
+#include <string.h>
 
 static void mapping(struct Paging *paging, uint32_t virt, uint32_t phys);
 
diff --git a/kernel/protected.c b/kernel/protected.c
index 04f0fbf..f3459fb 100644
--- a/kernel/protected.c
+++ b/kernel/protected.c
@@ -8,7 +8,8 @@
 #include <kernaux/asm/i386.h>
 #include <kernaux/drivers/console.h>
 #include <kernaux/drivers/intel_8259_pic.h>
-#include <kernaux/libc.h>
+
+#include <string.h>
 
 struct GdtPointer {
     unsigned short limit;
diff --git a/kernel/tss.c b/kernel/tss.c
index dbf5512..29789e0 100644
--- a/kernel/tss.c
+++ b/kernel/tss.c
@@ -3,7 +3,8 @@
 #include "config.h"
 
 #include <kernaux/arch/i386.h>
-#include <kernaux/libc.h>
+
+#include <string.h>
 
 static struct KernAux_Arch_I386_TSS tss;