diff --git a/lib/libarchive/archive_read.c b/lib/libarchive/archive_read.c
index aa90b3f88e4d..071c6a160503 100644
--- a/lib/libarchive/archive_read.c
+++ b/lib/libarchive/archive_read.c
@@ -433,7 +433,7 @@ archive_read_data(struct archive *a, void *buff, size_t s)
 		}
 
 		/* Compute the amount of zero padding needed. */
-		if (a->read_data_output_offset + s <
+		if (a->read_data_output_offset + (off_t)s <
 		    a->read_data_offset) {
 			len = s;
 		} else if (a->read_data_output_offset <