--- ./Makefile.in.orig	2008-09-12 22:37:29.000000000 +0200
+++ ./Makefile.in	2008-09-12 22:37:49.000000000 +0200
@@ -727,7 +727,7 @@
 
 tilda.desktop: tilda.desktop.in
 	sed -e 's|\@BINDIR\@|$(bindir)|' \
-	    -e 's|\@PIXMAPSDIR\@|$(datadir)/applications|' $< > $@
+	    -e 's|\@PIXMAPSDIR\@|$(datadir)/applications|' $*.in > $@
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
 .NOEXPORT: