diff --git a/libs/libc/include/unistd.h b/libs/libc/include/unistd.h
index 80add4cb..deb3c3cc 100644
--- a/libs/libc/include/unistd.h
+++ b/libs/libc/include/unistd.h
@@ -22,7 +22,9 @@ extern "C"
     int execve(const char*, char* const[], char* const[]);
     /* Not implemented. */
     int execvp(const char*, char* const[]);
-    /* Not implemented. */
+
+    /* Creates an identical copy (child) of the current process (parent). Returns 0 to the child, and the child's PID to
+     * the parent. */
     pid_t fork(void);
 
     /* Terminates the program with the status code status. */