diff --git a/ssl/t1_lib.cc b/ssl/t1_lib.cc
index 301096f..a978fb3 100644
--- a/ssl/t1_lib.cc
+++ b/ssl/t1_lib.cc
@@ -805,7 +805,7 @@
     *out_alert = SSL_AD_HANDSHAKE_FAILURE;
     return 0;
   }
-  ssl->s3->send_connection_binding = 1;
+  ssl->s3->send_connection_binding = true;
 
   return 1;
 }
@@ -840,7 +840,7 @@
     return 0;
   }
 
-  ssl->s3->send_connection_binding = 1;
+  ssl->s3->send_connection_binding = true;
 
   return 1;
 }
@@ -1547,7 +1547,7 @@
 // https://tools.ietf.org/html/draft-balfanz-tls-channelid-01
 
 static void ext_channel_id_init(SSL_HANDSHAKE *hs) {
-  hs->ssl->s3->tlsext_channel_id_valid = 0;
+  hs->ssl->s3->tlsext_channel_id_valid = false;
 }
 
 static int ext_channel_id_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
@@ -1579,7 +1579,7 @@
     return 0;
   }
 
-  ssl->s3->tlsext_channel_id_valid = 1;
+  ssl->s3->tlsext_channel_id_valid = true;
   return 1;
 }
 
@@ -1596,7 +1596,7 @@
     return 0;
   }
 
-  ssl->s3->tlsext_channel_id_valid = 1;
+  ssl->s3->tlsext_channel_id_valid = true;
   return 1;
 }
 
@@ -3373,7 +3373,7 @@
   if (!sig_ok) {
     OPENSSL_PUT_ERROR(SSL, SSL_R_CHANNEL_ID_SIGNATURE_INVALID);
     ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
-    ssl->s3->tlsext_channel_id_valid = 0;
+    ssl->s3->tlsext_channel_id_valid = false;
     return 0;
   }