diff --git a/smoke/tde/generate.pl.in b/smoke/tde/generate.pl.in
index ccda877b..e3c21747 100644
--- a/smoke/tde/generate.pl.in
+++ b/smoke/tde/generate.pl.in
@@ -164,7 +164,7 @@ closedir QT;
 my @kdeheaders = ();
 $kdeprefix = "@KDE_PREFIX@";
 $kdeinc= '@kde_includes@';
-$kdeinc =~ s/\${prefix}/$kdeprefix/; # Remove ${prefix} in src != build
+$kdeinc =~ s/\$\{prefix\}/$kdeprefix/; # Remove ${prefix} in src != build
 -d $kdeinc or die "Couldn't process $kdeinc: $!\n";
 
 find(