diff --git a/sys/od/od.c b/sys/od/od.c
index 3e62b3da90e2..f98f54297e1b 100644
--- a/sys/od/od.c
+++ b/sys/od/od.c
@@ -101,15 +101,15 @@ static inline void _bytes_format(char *format, uint16_t flags)
         case OD_FLAGS_BYTES_OCTAL | OD_FLAGS_LENGTH_LONG:
             sprintf(format, " %%0%dlo", sizeof(long) * _OCTAL_BYTE_LENGTH);
             break;
-#else /* !defined(__MACH__) */
+#else   /* !defined(__MACH__) */
         case OD_FLAGS_BYTES_OCTAL | OD_FLAGS_LENGTH_SHORT:
-        sprintf(format, " %lu", sizeof(short) * _OCTAL_BYTE_LENGTH);
+            sprintf(format, " %lu", sizeof(short) * _OCTAL_BYTE_LENGTH);
             break;
 
         case OD_FLAGS_BYTES_OCTAL | OD_FLAGS_LENGTH_LONG:
             sprintf(format, " %lu", sizeof(long) * _OCTAL_BYTE_LENGTH);
             break;
-#endif /* !defined(__MACH__) */
+#endif  /* !defined(__MACH__) */
 
         case OD_FLAGS_BYTES_INT | OD_FLAGS_LENGTH_1:
             strncpy(format, " %4d", sizeof(" %4d"));
@@ -135,7 +135,7 @@ static inline void _bytes_format(char *format, uint16_t flags)
         case OD_FLAGS_BYTES_INT | OD_FLAGS_LENGTH_LONG:
             sprintf(format, " %%%dld", sizeof(long) * _INT_BYTE_LENGTH);
             break;
-#else /* !defined(__MACH__) */
+#else   /* !defined(__MACH__) */
         case OD_FLAGS_BYTES_INT | OD_FLAGS_LENGTH_SHORT:
             sprintf(format, " %%%ld", sizeof(short) * _INT_BYTE_LENGTH);
             break;
@@ -143,7 +143,7 @@ static inline void _bytes_format(char *format, uint16_t flags)
         case OD_FLAGS_BYTES_INT | OD_FLAGS_LENGTH_LONG:
             sprintf(format, " %%%ld", sizeof(long) * _INT_BYTE_LENGTH);
             break;
-#endif /* !defined(__MACH__) */
+#endif  /* !defined(__MACH__) */
 
         case OD_FLAGS_BYTES_UINT | OD_FLAGS_LENGTH_1:
             strncpy(format, " %3u", sizeof(" %3u"));
@@ -169,7 +169,7 @@ static inline void _bytes_format(char *format, uint16_t flags)
         case OD_FLAGS_BYTES_UINT | OD_FLAGS_LENGTH_LONG:
             sprintf(format, " %%%ulu", sizeof(long) * _INT_BYTE_LENGTH);
             break;
-#else /* !defined(__MACH__) */
+#else   /* !defined(__MACH__) */
         case OD_FLAGS_BYTES_UINT | OD_FLAGS_LENGTH_SHORT:
             sprintf(format, " %%%lu", sizeof(short) * _INT_BYTE_LENGTH);
             break;
@@ -177,7 +177,7 @@ static inline void _bytes_format(char *format, uint16_t flags)
         case OD_FLAGS_BYTES_UINT | OD_FLAGS_LENGTH_LONG:
             sprintf(format, " %%%lu", sizeof(long) * _INT_BYTE_LENGTH);
             break;
-#endif /* !defined(__MACH__) */
+#endif  /* !defined(__MACH__) */
 
         case OD_FLAGS_BYTES_HEX | OD_FLAGS_LENGTH_1:
             strncpy(format, " %02x", sizeof(" %02x"));
@@ -203,7 +203,7 @@ static inline void _bytes_format(char *format, uint16_t flags)
         case OD_FLAGS_BYTES_HEX | OD_FLAGS_LENGTH_LONG:
             sprintf(format, " %%0%ulx", (unsigned)sizeof(long) * _HEX_BYTE_LENGTH);
             break;
-#else /* !defined(__MACH__) */
+#else   /* !defined(__MACH__) */
         case OD_FLAGS_BYTES_HEX | OD_FLAGS_LENGTH_SHORT:
             sprintf(format, " %%0%lx", sizeof(short) * _HEX_BYTE_LENGTH);
             break;
@@ -211,7 +211,7 @@ static inline void _bytes_format(char *format, uint16_t flags)
         case OD_FLAGS_BYTES_HEX | OD_FLAGS_LENGTH_LONG:
             sprintf(format, " %%0%lx", sizeof(long) * _HEX_BYTE_LENGTH);
             break;
-#endif /* !defined(__MACH__) */
+#endif  /* !defined(__MACH__) */
 
         default:
             break;