diff --git a/sd-bootloader-ng/bootmanager/config.c b/sd-bootloader-ng/bootmanager/config.c
index ed47ce09..a9e95d97 100644
--- a/sd-bootloader-ng/bootmanager/config.c
+++ b/sd-bootloader-ng/bootmanager/config.c
@@ -87,7 +87,7 @@ static void jsmn_obj_key(const char *key, size_t key_len, void *user_arg) {
         if (jsonArrayId == 0)
           Config_generalSettings.ofwFixValue = 0x00000000;
         if (jsonArrayId < 4)
-          Config_generalSettings.ofwFixValue += xtob(key) << 8*jsonArrayId;
+          Config_generalSettings.ofwFixValue += xtob((char*)key) << 8*jsonArrayId;
         jsonArrayId++;
       } else if (strncmp(jsonGroupName, "ofw", 3) == 0
             || strncmp(jsonGroupName, "cfw", 3)
diff --git a/sd-bootloader-ng/bootmanager/main.c b/sd-bootloader-ng/bootmanager/main.c
index f87fff02..66a91f0a 100755
--- a/sd-bootloader-ng/bootmanager/main.c
+++ b/sd-bootloader-ng/bootmanager/main.c
@@ -693,7 +693,7 @@ static bool prepareRun(sImageInfo* imageInfo, char* imagePath, uint32_t filesize
             readLen = 0;
           }
 
-          if (readLen > 0 && (readLen == sl_FsRead(fhandle, offset, numbers, readLen))) {
+          if (readLen > 0 && (readLen == sl_FsRead(fhandle, offset, (char*)numbers, readLen))) {
             sl_FsClose(fhandle, 0, 0, 0);
             if (numbers[1] == 0xBEAC0005) {
               Config_generalSettings.ofwFixValue = numbers[0];