diff --git a/cbits/sha3.c b/cbits/sha3.c
--- a/cbits/sha3.c
+++ b/cbits/sha3.c
@@ -139,6 +139,12 @@
 {
 	uint64_t w[25];
 
+	/* process full buffer if needed */
+	if (ctx->bufindex == ctx->bufsz) {
+		sha3_do_chunk(ctx->state, (uint64_t *) ctx->buf, ctx->bufsz / 8);
+		ctx->bufindex = 0;
+	}
+
 	/* add the 10*1 padding */
 	ctx->buf[ctx->bufindex++] = 1;
 	memset(ctx->buf + ctx->bufindex, 0, ctx->bufsz - ctx->bufindex);
diff --git a/cryptohash.cabal b/cryptohash.cabal
--- a/cryptohash.cabal
+++ b/cryptohash.cabal
@@ -1,5 +1,5 @@
 Name:                cryptohash
-Version:             0.11.1
+Version:             0.11.2
 Description:
     A collection of crypto hashes, with a practical incremental and one-pass, pure APIs,
     with performance close to the fastest implementations available in other languages.