2 files changed, 2 insertions, 2 deletions
diff --git a/src/libbio/bgetrune.c b/src/libbio/bgetrune.c
index f1b065bc..46991e16 100644
--- a/src/libbio/bgetrune.c
+++ b/src/libbio/bgetrune.c
@@ -7,7 +7,7 @@ Bgetrune(Biobuf *bp)
 {
 	int c, i;
 	Rune rune;
-	char str[4];
+	char str[UTFmax];
 
 	c = Bgetc(bp);
 	if(c < Runeself) {		/* one char */
diff --git a/src/libbio/bputrune.c b/src/libbio/bputrune.c
index a2eaa83e..651ae7b7 100644
--- a/src/libbio/bputrune.c
+++ b/src/libbio/bputrune.c
@@ -6,7 +6,7 @@ int
 Bputrune(Biobuf *bp, long c)
 {
 	Rune rune;
-	char str[4];
+	char str[UTFmax];
 	int n;
 
 	rune = c;