diff --git a/src/liblzma/common/easy.c b/src/liblzma/common/easy.c
index 2294ba70..718fffdd 100644
--- a/src/liblzma/common/easy.c
+++ b/src/liblzma/common/easy.c
@@ -28,7 +28,7 @@ struct lzma_coder_s {
 
 	/// We need to keep the filters array available in case
 	/// LZMA_FULL_FLUSH is used.
-	lzma_filter filters[5];
+	lzma_filter filters[LZMA_FILTERS_MAX + 1];
 };