diff --git a/include/tlibc/string/cstr.h b/include/tlibc/string/cstr.h
index 4712d39..d0081e4 100755
--- a/include/tlibc/string/cstr.h
+++ b/include/tlibc/string/cstr.h
@@ -1,6 +1,8 @@
 #pragma once
 #include "../std.h"
 
+char* cstr_copy(cstr self);
+
 #define strcat_malloc(STR0, ...) _strcat_malloc(count_args(__VA_ARGS__), STR0, __VA_ARGS__)
 char* _strcat_malloc(u64 n, cstr str0, ...);
 char* _vstrcat_malloc(u64 n, cstr str0, va_list args);
diff --git a/src/string/cstr.c b/src/string/cstr.c
index b8425a3..9ab8dd2 100755
--- a/src/string/cstr.c
+++ b/src/string/cstr.c
@@ -1,5 +1,15 @@
 #include "tlibc/string/cstr.h"
 
+char* cstr_copy(cstr self){
+    if(self == NULL)
+        return NULL;
+    
+    u64 len_with_zero = strlen(self) + 1;
+    char* copy = (char*)malloc(len_with_zero);
+    memcpy(copy, self, len_with_zero);
+    return copy;
+}
+
 char* _strcat_malloc(u64 n, cstr str0, ...){
     va_list args;
     va_start(args, str0);