diff --git a/graf2d/asimage/src/TASImage.cxx b/graf2d/asimage/src/TASImage.cxx
index 917357dad19243435074324d0a6aa82342eaa971..1ad74266445bce3a205450606332ff084aa09ce8 100644
--- a/graf2d/asimage/src/TASImage.cxx
+++ b/graf2d/asimage/src/TASImage.cxx
@@ -6047,7 +6047,7 @@ Bool_t TASImage::SetImageBuffer(char **buffer, EImageFileTypes type)
    params.width = 0;
    params.height = 0 ;
    params.filter = SCL_DO_ALL;
-   params.gamma = 0;
+   params.gamma = 1;
    params.gamma_table = 0;
    params.compression = 0;
    params.format = ASA_ASImage;