diff --git a/scripts/update_auto_tree b/scripts/update_auto_tree
index a68d561d..029ef703 100755
--- a/scripts/update_auto_tree
+++ b/scripts/update_auto_tree
@@ -2,7 +2,7 @@
 PORTDIR="/release/trees/portage-auto/"
 TMPREPO=$(mktemp)
 trap "rm -f $TMPREPO" EXIT
-cat >$f <<EOF
+cat >$TMPREPO <<EOF
 [DEFAULT]
 main-repo = gentoo
 
diff --git a/scripts/update_official_tree b/scripts/update_official_tree
index 3424cb64..55ecea0b 100755
--- a/scripts/update_official_tree
+++ b/scripts/update_official_tree
@@ -2,7 +2,7 @@
 PORTDIR="/release/trees/portage-official/"
 TMPREPO=$(mktemp)
 trap "rm -f $TMPREPO" EXIT
-cat >$f <<EOF
+cat >$TMPREPO <<EOF
 [DEFAULT]
 main-repo = gentoo
 
diff --git a/scripts/update_snapshot_tree b/scripts/update_snapshot_tree
index 3a5284ad..76cd00ea 100755
--- a/scripts/update_snapshot_tree
+++ b/scripts/update_snapshot_tree
@@ -2,7 +2,7 @@
 PORTDIR="/release/trees/portage-snapshot/"
 TMPREPO=$(mktemp)
 trap "rm -f $TMPREPO" EXIT
-cat >$f <<EOF
+cat >$TMPREPO <<EOF
 [DEFAULT]
 main-repo = gentoo