diff --git a/puer.c b/puer.c
index 6bc3ec5..eb748d3 100644
--- a/puer.c
+++ b/puer.c
@@ -138,10 +138,10 @@ void compress_hash(struct hashstate *state) {
 	state->a[3] = w[3];
 
 	// B_{i+1} = W_i^L || V_i^R
-	state->b[0] = v[0];
-	state->b[1] = v[1];
-	state->b[2] = w[2];
-	state->b[3] = w[3];
+	state->b[0] = w[0];
+	state->b[1] = w[1];
+	state->b[2] = v[2];
+	state->b[3] = v[3];
 
 	// Mark that we have consumed the buffer
 	state->length = 0;
@@ -248,3 +248,12 @@ void hmac(unsigned char output[32], unsigned char key[], size_t keylen, unsigned
 	feed_hash(&state, inner_hash, 32);
 	finalize_hash(&state, output);
 }
+
+int main(void) {
+	unsigned char hashed[32];
+	unsigned char key[] = "12345678901234567899";
+	unsigned char message[] = "barbaz";
+	hmac(hashed, key, sizeof(key)-1, message, sizeof(message)-1);
+	for (size_t i = 0; i < 32; i++) {printf("%02hhx ", hashed[i]);}printf("\n"); //debg
+	return 0;
+}