diff --git a/examples/ccs811_simpletest.py b/examples/ccs811_simpletest.py
index 8b82e37..9ec7078 100644
--- a/examples/ccs811_simpletest.py
+++ b/examples/ccs811_simpletest.py
@@ -11,6 +11,6 @@
     pass
 
 while True:
-    print("CO2: {} PPM, TVOC: {} PPM"
-          .format(ccs811.eco2, ccs811.tvoc)
+    print("CO2: {} PPM, TVOC: {} PPB"
+          .format(ccs811.eco2, ccs811.tvoc))
     time.sleep(0.5)