@@ -772,17 +772,17 @@ Get or set arbitrary baudrate on the serial port.
 int
 main(int argc, char *argv[])
 {
-#ifndef BOTHER
+#if !defined BOTHER
     fprintf(stderr, "BOTHER is unsupported\en");
     /* Program may fallback to TCGETS/TCSETS with Bnnn constants */
     exit(EXIT_FAILURE);
 #else
     /* Declare tio structure, its type depends on supported ioctl */
-#ifdef TCGETS2
+# if defined TCGETS2
     struct termios2 tio;
-#else
+# else
     struct termios tio;
-#endif
+# endif
     int fd, rc;
 
     if (argc != 2 && argc != 3 && argc != 4) {

@@ -797,11 +797,11 @@ main(int argc, char *argv[])
     }
 
     /* Get the current serial port settings via supported ioctl */
-#ifdef TCGETS2
+# if defined TCGETS2
     rc = ioctl(fd, TCGETS2, &tio);
-#else
+# else
     rc = ioctl(fd, TCGETS, &tio);
-#endif
+# endif
     if (rc) {
         perror("TCGETS");
         close(fd);

@@ -822,11 +822,11 @@ main(int argc, char *argv[])
         tio.c_ispeed = (argc == 4) ? atoi(argv[3]) : atoi(argv[2]);
 
         /* Set new serial port settings via supported ioctl */
-#ifdef TCSETS2
+# if defined TCSETS2
         rc = ioctl(fd, TCSETS2, &tio);
-#else
+# else
         rc = ioctl(fd, TCSETS, &tio);
-#endif
+# endif
         if (rc) {
             perror("TCSETS");
             close(fd);

@@ -834,11 +834,11 @@ main(int argc, char *argv[])
         }
 
         /* And get new values which were really configured */
-#ifdef TCGETS2
+# if defined TCGETS2
         rc = ioctl(fd, TCGETS2, &tio);
-#else
+# else
         rc = ioctl(fd, TCGETS, &tio);
-#endif
+# endif
         if (rc) {
             perror("TCGETS");
             close(fd);