diff --git a/flight/pios/common/pios_ms5611.c b/flight/pios/common/pios_ms5611.c
index 7aaf6fcf7..3268289b4 100644
--- a/flight/pios/common/pios_ms5611.c
+++ b/flight/pios/common/pios_ms5611.c
@@ -32,7 +32,7 @@
 
 #ifdef PIOS_INCLUDE_MS5611
 
-#define POW2(x) (2 << (x - 1))
+#define POW2(x) (1 << x)
 
 // TODO: Clean this up.  Getting around old constant.
 #define PIOS_MS5611_OVERSAMPLING oversampling