diff --git a/ui/vnc-auth-sasl.c b/ui/vnc-auth-sasl.c
index e2045fc0b8..8fba7702c2 100644
--- a/ui/vnc-auth-sasl.c
+++ b/ui/vnc-auth-sasl.c
@@ -31,7 +31,9 @@
 void vnc_sasl_client_cleanup(VncState *vs)
 {
     if (vs->sasl.conn) {
-        vs->sasl.runSSF = vs->sasl.waitWriteSSF = vs->sasl.wantSSF = 0;
+        vs->sasl.runSSF = false;
+        vs->sasl.wantSSF = false;
+        vs->sasl.waitWriteSSF = 0;
         vs->sasl.encodedLength = vs->sasl.encodedOffset = 0;
         vs->sasl.encoded = NULL;
         g_free(vs->sasl.username);
diff --git a/ui/vnc-auth-sasl.h b/ui/vnc-auth-sasl.h
index fd9b18a8fe..ee243a9d64 100644
--- a/ui/vnc-auth-sasl.h
+++ b/ui/vnc-auth-sasl.h
@@ -37,9 +37,9 @@ typedef struct VncDisplaySASL VncDisplaySASL;
 struct VncStateSASL {
     sasl_conn_t *conn;
     /* If we want to negotiate an SSF layer with client */
-    int wantSSF :1;
+    bool wantSSF;
     /* If we are now running the SSF layer */
-    int runSSF :1;
+    bool runSSF;
     /*
      * If this is non-zero, then wait for that many bytes
      * to be written plain, before switching to SSF encoding