diff --git a/project/Core/Inc/tftp.h b/project/Core/Inc/tftp.h
index 66cdcce..4b28c33 100644
--- a/project/Core/Inc/tftp.h
+++ b/project/Core/Inc/tftp.h
@@ -22,6 +22,8 @@ extern "C" {
 
 #define TFTP_READ 0
 
+#define UNUSED(x) (void)(x)
+
 typedef struct tftp_custom_file_s {
     char* data;
     size_t len;
diff --git a/project/Core/Src/tftp.c b/project/Core/Src/tftp.c
index 4909456..716096b 100644
--- a/project/Core/Src/tftp.c
+++ b/project/Core/Src/tftp.c
@@ -116,6 +116,8 @@ size_t tftp_custom_fwrite(const void* buf, size_t bytes, tftp_custom_file_t* han
 void* tftp_open(const char* fname, const char* mode, uint8_t write) {
     LOG_INFO(TAG, "Opening %s", fname);
 
+    UNUSED(mode);
+
     if (strcmp(fname, virt_file[0].name) == 0 && write == TFTP_READ) {
         tftp_custom_fseek(&virt_file[0], 0, SEEK_SET);
         return &virt_file[0];
@@ -182,7 +184,7 @@ int tftp_read(void* handle, void* buf, int bytes) {
     FILE* file = (FILE*)handle;
 
     if ((tftp_custom_file_t*)file == &virt_file[0]) {
-        ret = tftp_custom_fread(buf, bytes, (tftp_custom_file_t*)file);
+        ret = (int)tftp_custom_fread(buf, (size_t)bytes, (tftp_custom_file_t*)file);
         return ret;
     } else if ((tftp_custom_file_t*)file == &virt_file[1]) {
         LOG_CRIT(TAG, "Exception: Trying to read a write only file");
@@ -191,8 +193,8 @@ int tftp_read(void* handle, void* buf, int bytes) {
         LOG_CRIT(TAG, "Exception: Trying to read a write only file");
         return -1;
     }
-    // TODO: waiting on Lorentz to finish creating f* functions for LLFS
-    ret = fread(buf, sizeof(uint8_t), bytes, file);
+    
+    ret = (int)fread(buf, sizeof(uint8_t), (size_t)bytes, file);
     if (ret <= 0) {
         return -1;
     }
@@ -212,7 +214,7 @@ int tftp_write(void* handle, struct pbuf* p) {
     LOG_DEBUG(TAG, "Not implemented yet");
     tftp_custom_file_t* file = (tftp_custom_file_t*)handle;
     if (file == &virt_file[1] || file == &virt_file[2]) {
-        return tftp_custom_fwrite(p->payload, p->len, file);
+        return (int)tftp_custom_fwrite(p->payload, (size_t)(p->len), file);
     }
     return -1;
 }