diff --git a/pipi/pixels.c b/pipi/pixels.c
index 6a084ba..95b2196 100644
--- a/pipi/pixels.c
+++ b/pipi/pixels.c
@@ -28,7 +28,7 @@
 #include "pipi.h"
 #include "pipi_internals.h"
 
-#define GAMMA 2.2
+#define GAMMA 1.0
 
 static void init_tables(void);