diff --git a/src/po/POTFILES.in b/src/po/POTFILES.in
index 690484bdd..d69f9a805 100644
--- a/src/po/POTFILES.in
+++ b/src/po/POTFILES.in
@@ -33,6 +33,7 @@ tuxpaint.desktop.in
 ../magic/src/negative.c
 ../magic/src/noise.c
 ../magic/src/rails.c
+../magic/src/rain.c
 ../magic/src/rainbow.c
 ../magic/src/ripples.c
 ../magic/src/sharpen.c