diff --git a/bootloader/main-pp.c b/bootloader/main-pp.c
index 4472a61aa8..1ab6ebdd6f 100644
--- a/bootloader/main-pp.c
+++ b/bootloader/main-pp.c
@@ -346,7 +346,7 @@ void* main(void)
         /* First try a (hidden) firmware partition */
         printf("Trying firmware partition");
         pinfo = disk_partinfo(1);
-        if(pinfo->type == PARTITION_TYPE_HIDDEN)
+        if(pinfo->type == PARTITION_TYPE_OS2_HIDDEN_C_DRIVE)
         {
             rc = load_mi4_part(loadbuffer, pinfo, MAX_LOADSIZE);
             if (rc < EOK) {
diff --git a/firmware/export/disk.h b/firmware/export/disk.h
index b9619be983..9672a6d318 100644
--- a/firmware/export/disk.h
+++ b/firmware/export/disk.h
@@ -27,10 +27,10 @@ struct partinfo {
     unsigned char type;
 };
 
-#define PARTITION_TYPE_FAT32     0x0b
-#define PARTITION_TYPE_FAT32_LBA 0x0c
-#define PARTITION_TYPE_FAT16     0x06
-#define PARTITION_TYPE_HIDDEN    0x84
+#define PARTITION_TYPE_FAT32                0x0b
+#define PARTITION_TYPE_FAT32_LBA            0x0c
+#define PARTITION_TYPE_FAT16                0x06
+#define PARTITION_TYPE_OS2_HIDDEN_C_DRIVE   0x84
 
 /* returns a pointer to an array of 8 partinfo structs */
 struct partinfo* disk_init(IF_MV_NONVOID(int volume));