diff --git a/README.md b/README.md
index 5a203bd..12ff4a9 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ The Aquamaniac Home automation/control system consists of multiple parts:
     communication network (clock/data), addresses are auto-assigned, no prior 
     setup necessary, no central bottleneck or single point of failure
   - node types
-    - environmental measuring (temperature, humidty, CO2 and others)
+    - environmental measuring (temperature, humidity, CO2 and others)
     - motion detection, door/window sensors
     - LED strip controllers
   - modular operating system written in AVR assembler