diff --git a/debian/tests/control b/debian/tests/control
index 8eb1c67..221d1e9 100644
--- a/debian/tests/control
+++ b/debian/tests/control
@@ -1,3 +1,3 @@
-Depends: @, postgresql-server-dev-all, locales-all
+Depends: @, postgresql-server-dev-all, locales
 Tests: installcheck
-Restrictions: allow-stderr
+Restrictions: needs-root allow-stderr
diff --git a/debian/tests/installcheck b/debian/tests/installcheck
index e592cd0..5ae27c7 100755
--- a/debian/tests/installcheck
+++ b/debian/tests/installcheck
@@ -1,4 +1,13 @@
 #!/bin/sh
+
+if [ -f /etc/locale.gen ]; then
+	# Debian
+	grep -Fq "en_US.UTF-8 UTF-8" || echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen
+	locale-gen
+else
+	# Ubuntu
+	locale-gen en_US.UTF-8
+fi
 
 # to_multi_byte needs English, and UTF-8
 export LC_ALL=en_US.utf8