diff --git a/klibc/include/string.h b/klibc/include/string.h
index 4f01fc1..843ed88 100644
--- a/klibc/include/string.h
+++ b/klibc/include/string.h
@@ -3,12 +3,13 @@
 
 #include <stddef.h>
 
-extern int memcmp(const void* s1, const void* s2, size_t n);
-extern void* memmove(void* dst, const void* src, size_t n);
-extern void* memcpy(void* dst, const void* src, size_t n);
-extern void* memset(void* dst, int c, size_t n);
+extern int memcmp(const void *s1, const void *s2, size_t n);
+extern void *memmove(void *dst, const void *src, size_t n);
+extern void *memcpy(void *dst, const void *src, size_t n);
+extern void *memset(void *dst, int c, size_t n);
 
-extern size_t strlen(const char* s);
-extern int strcmp(const char* s1, const char* s2);
+extern size_t strlen(const char *s);
+extern int strcmp(const char *s1, const char *s2);
+extern char *strncpy(char *dst, const char *src, size_t n);
 
 #endif  // CLASSICOS_KLIBC_STRING_H
diff --git a/klibc/src/string.c b/klibc/src/string.c
index a9a8a84..21495ce 100644
--- a/klibc/src/string.c
+++ b/klibc/src/string.c
@@ -1,8 +1,8 @@
 #include <string.h>
 
-int memcmp(const void* s1, const void* s2, size_t n) {
-    const unsigned char* c1 = s1;
-    const unsigned char* c2 = s2;
+int memcmp(const void *s1, const void *s2, size_t n) {
+    const unsigned char *c1 = s1;
+    const unsigned char *c2 = s2;
     int d = 0;
 
     while (n--) {
@@ -13,9 +13,9 @@ int memcmp(const void* s1, const void* s2, size_t n) {
     return d;
 }
 
-void* memmove(void* dst, const void* src, size_t n) {
-    const char* p = src;
-    char* q = dst;
+void *memmove(void *dst, const void *src, size_t n) {
+    const char *p = src;
+    char *q = dst;
 #if defined(__i386__) || defined(__x86_64__)
     if (q < p) {
         __asm__ volatile("cld; rep; movsb" : "+c"(n), "+S"(p), "+D"(q));
@@ -41,19 +41,19 @@ void* memmove(void* dst, const void* src, size_t n) {
     return dst;
 }
 
-void* memcpy(void* dst, const void* src, size_t n) {
-    const char* p = src;
-    char* q = dst;
+void *memcpy(void *dst, const void *src, size_t n) {
+    const char *p = src;
+    char *q = dst;
 #if defined(__i386__)
     size_t nl = n >> 2;
     __asm__ volatile("cld ; rep ; movsl ; movl %3,%0 ; rep ; movsb"
-                    : "+c"(nl), "+S"(p), "+D"(q)
-                    : "r"(n & 3));
+                     : "+c"(nl), "+S"(p), "+D"(q)
+                     : "r"(n & 3));
 #elif defined(__x86_64__)
     size_t nq = n >> 3;
     __asm__ volatile("cld ; rep ; movsq ; movl %3,%%ecx ; rep ; movsb"
-                    : "+c"(nq), "+S"(p), "+D"(q)
-                    : "r"((uint32_t)(n & 7)));
+                     : "+c"(nq), "+S"(p), "+D"(q)
+                     : "r"((uint32_t)(n & 7)));
 #else
     while (n--) {
         *q++ = *p++;
@@ -63,20 +63,20 @@ void* memcpy(void* dst, const void* src, size_t n) {
     return dst;
 }
 
-void* memset(void* dst, int c, size_t n) {
-    char* q = dst;
+void *memset(void *dst, int c, size_t n) {
+    char *q = dst;
 
 #if defined(__i386__)
     size_t nl = n >> 2;
     __asm__ volatile("cld ; rep ; stosl ; movl %3,%0 ; rep ; stosb"
-                    : "+c"(nl), "+D"(q)
-                    : "a"((unsigned char)c * 0x01010101U), "r"(n & 3));
+                     : "+c"(nl), "+D"(q)
+                     : "a"((unsigned char)c * 0x01010101U), "r"(n & 3));
 #elif defined(__x86_64__)
     size_t nq = n >> 3;
     __asm__ volatile("cld ; rep ; stosq ; movl %3,%%ecx ; rep ; stosb"
-                    : "+c"(nq), "+D"(q)
-                    : "a"((unsigned char)c * 0x0101010101010101U),
-                      "r"((uint32_t)n & 7));
+                     : "+c"(nq), "+D"(q)
+                     : "a"((unsigned char)c * 0x0101010101010101U),
+                       "r"((uint32_t)n & 7));
 #else
     while (n--) {
         *q++ = c;
@@ -86,15 +86,15 @@ void* memset(void* dst, int c, size_t n) {
     return dst;
 }
 
-size_t strlen(const char* s) {
-    const char* ss = s;
+size_t strlen(const char *s) {
+    const char *ss = s;
     while (*ss) ss++;
     return ss - s;
 }
 
-int strcmp(const char* s1, const char* s2) {
-    const unsigned char* c1 = (const unsigned char*)s1;
-    const unsigned char* c2 = (const unsigned char*)s2;
+int strcmp(const char *s1, const char *s2) {
+    const unsigned char *c1 = (const unsigned char *)s1;
+    const unsigned char *c2 = (const unsigned char *)s2;
     unsigned char ch;
     int d = 0;
 
@@ -105,3 +105,19 @@ int strcmp(const char* s1, const char* s2) {
 
     return d;
 }
+
+char *strncpy(char *dst, const char *src, size_t n) {
+    char *q = dst;
+    const char *p = src;
+    char ch;
+
+    while (n) {
+        n--;
+        *q++ = ch = *p++;
+        if (!ch) break;
+    }
+
+    memset(q, 0, n);
+
+    return dst;
+}