diff --git a/.config/picom/picom.conf b/.config/picom/picom.conf
index 768282a..ef25941 100644
--- a/.config/picom/picom.conf
+++ b/.config/picom/picom.conf
@@ -2,7 +2,7 @@ inactive-opacity = .7;
 active-opacity = .7;
 
 opacity-rule = [
-      "100:class_g = 'gimp'",
+      "100:class_g = 'Gimp'",
       "100:class_g = 'sxiv'",
       "100:class_g = 'mpv'",
       "100:class_g = 'feh'"