diff --git a/gnome-online-accounts.spec b/gnome-online-accounts.spec
index ef66b10..3695ab2 100644
--- a/gnome-online-accounts.spec
+++ b/gnome-online-accounts.spec
@@ -90,6 +90,10 @@ libraries in GNOME can access the user's online accounts.
 
 %build
 TWITTER=$(cat %{_datadir}/libsocialweb/keys/twitter)
+if test "x$TWITTER" = "x"; then
+    echo "No API keys for twitter."
+    false
+fi
 TWITTER_KEY=$(echo $TWITTER | awk '{print $1}')
 TWITTER_SECRET=$(echo $TWITTER | awk '{print $2}')
 %configure \