diff --git a/mongoose.c b/mongoose.c
index 873090cd..4dc96c38 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -1401,7 +1401,7 @@ static void walkchunks(struct mg_connection *c, struct mg_http_message *hm,
         char *buf2 = (char *) &c->recv.buf[reqlen];
         size_t memo2 = c->recv.len;
         size_t cl2 = get_chunk_length(&buf2[off], memo2 - reqlen - off, &ll);
-        size_t n = cl < ll + 2 ? 0 : cl2 - ll - 2;
+        size_t n = cl2 < ll + 2 ? 0 : cl2 - ll - 2;
         memmove(buf2 + bl, buf2 + off + ll, n);
         bl += n;
         off += cl2;
diff --git a/src/http.c b/src/http.c
index 2f045971..2411f30d 100644
--- a/src/http.c
+++ b/src/http.c
@@ -990,7 +990,7 @@ static void walkchunks(struct mg_connection *c, struct mg_http_message *hm,
         char *buf2 = (char *) &c->recv.buf[reqlen];
         size_t memo2 = c->recv.len;
         size_t cl2 = get_chunk_length(&buf2[off], memo2 - reqlen - off, &ll);
-        size_t n = cl < ll + 2 ? 0 : cl2 - ll - 2;
+        size_t n = cl2 < ll + 2 ? 0 : cl2 - ll - 2;
         memmove(buf2 + bl, buf2 + off + ll, n);
         bl += n;
         off += cl2;