diff --git a/src/misc.c b/src/misc.c
index 0d4f5b5f..c0c144ef 100644
--- a/src/misc.c
+++ b/src/misc.c
@@ -746,11 +746,11 @@ int _libssh2_get_u32(struct string_buf *buf, uint32_t *out)
 
 int _libssh2_get_u64(struct string_buf *buf, libssh2_uint64_t *out)
 {
+       unsigned char *p = buf->dataptr;
        if (!_libssh2_check_length(buf, 8)) {
                return -1;
        }
 
-       unsigned char *p = buf->dataptr;
        *out = _libssh2_ntohu64(p);
        buf->dataptr += 8;
        buf->offset += 8;
diff --git a/src/transport.c b/src/transport.c
index 071c50e0..df59d6f1 100644
--- a/src/transport.c
+++ b/src/transport.c
@@ -482,7 +482,7 @@ int _libssh2_transport_read(LIBSSH2_SESSION * session)
                 /* copy the data from index 5 to the end of
                    the blocksize from the temporary buffer to
                    the start of the decrypted buffer */
-                if (blocksize - 5 <= total_num) {
+                if (blocksize - 5 <= (int) total_num) {
                     memcpy(p->wptr, &block[5], blocksize - 5);
                     p->wptr += blocksize - 5;       /* advance write pointer */
                 } else {
@@ -564,7 +564,7 @@ int _libssh2_transport_read(LIBSSH2_SESSION * session)
            copy them as-is to the target buffer */
         if(numbytes > 0) {
             
-            if (numbytes <= total_num - (p->wptr - p->payload)) {
+            if (numbytes <= (int)(total_num - (p->wptr - p->payload))) {
                 memcpy(p->wptr, &p->buf[p->readidx], numbytes);
             }
             else {