diff --git a/examples/osd/climate/project-conf.h b/examples/osd/climate/project-conf.h
index af40cac78..a443edcce 100644
--- a/examples/osd/climate/project-conf.h
+++ b/examples/osd/climate/project-conf.h
@@ -32,6 +32,7 @@
 #ifndef PROJECT_ERBIUM_CONF_H_
 #define PROJECT_ERBIUM_CONF_H_
 
+#define DHT11	1
 #define PLATFORM_HAS_INFO 1
 #define PLATFORM_HAS_BATTERY 1
 #define PLATFORM_HAS_DS1820  1
diff --git a/platform/osd-merkur/dev/dht11.c b/platform/osd-merkur/dev/dht11.c
index 0bea2efbf..39e1a7701 100644
--- a/platform/osd-merkur/dev/dht11.c
+++ b/platform/osd-merkur/dev/dht11.c
@@ -29,6 +29,7 @@
 #define udelay(u) clock_delay_usec(u)
 #define mdelay(u) clock_delay_msec(u)
 
+// todo: set DHT22 or DHT11 in project file
 // define for DHT11 else for DHT22, RHT03 
 //   #define DHT11	1