Index: filed.c
==================================================================
--- filed.c
+++ filed.c
@@ -354,10 +354,16 @@
 		if (range_end <= range_start) {
 			return(NULL);
 		}
 
 		range_length = range_end - range_start;
+
+		filed_log_msg_debug("Computing length parameter: %llu = %llu - %llu",
+			(unsigned long long) range_length,
+			(unsigned long long) range_end,
+			(unsigned long long) range_start
+		);
 	}
 
 	/* Fill up structure to return */
 	buffer_st->path   = path;
 	buffer_st->headers.range.present = range_request;
@@ -432,10 +438,15 @@
 				filed_log_msg("PROCESS_REPLY_COMPLETE FD=... ERROR=416");
 
 				filed_error_page(fp, date_current, 416);
 			} else {
 				if (request->headers.range.length < 0) {
+					filed_log_msg_debug("Computing length to fit in bounds: fileinfo->len = %llu, request->headers.range.offset = %llu",
+						(unsigned long long) fileinfo->len,
+						(unsigned long long) request->headers.range.offset
+					);
+
 					request->headers.range.length = fileinfo->len - request->headers.range.offset;
 				}
 
 				filed_log_msg_debug("Partial request, starting at: %llu and running for %llu bytes", (unsigned long long) request->headers.range.offset, (unsigned long long) request->headers.range.length);