diff --git a/sonoff/xsns_31_ccs811.ino b/sonoff/xsns_31_ccs811.ino
index 8aba4d04f..482572cdb 100644
--- a/sonoff/xsns_31_ccs811.ino
+++ b/sonoff/xsns_31_ccs811.ino
@@ -47,12 +47,13 @@ void CCS811Update()  // Perform every n second
     tcnt = 0;
     CCS811_ready = 0;
     if (!CCS811_type) {
-      if (ccs.begin(CCS811_ADDRESS)) { // ccs.begin returns true in case of success
+      sint8_t res = ccs.begin(CCS811_ADDRESS);
+      if (!res) {
         CCS811_type = 1;
         snprintf_P(log_data, sizeof(log_data), S_LOG_I2C_FOUND_AT, "CCS811", 0x5A);
         AddLog(LOG_LEVEL_DEBUG);
       } else {
-        //snprintf_P(log_data, sizeof(log_data), "CCS811 init failed");
+        //snprintf_P(log_data, sizeof(log_data), "CCS811 init failed: %d",res);
         //AddLog(LOG_LEVEL_DEBUG);
       }
     } else {