diff --git a/c-programming/strings/portable_basename.c b/c-programming/strings/portable_basename.c
index 2b44c8c..3b81073 100644
--- a/c-programming/strings/portable_basename.c
+++ b/c-programming/strings/portable_basename.c
@@ -180,7 +180,7 @@ static void func_expect(const char* path, const char* expected_output,
 #define INT2STR(x) STRINGIZE(x)
 
 #define TIMES_TO_CALL 65535
-#include<unistd.h>
+
 int main(void) {
 # ifdef SYS_NT
 	// set console output code page to the native one