diff --git a/nextnumber b/nextnumber
index 27dfa0a9b..ab411ac29 100755
--- a/nextnumber
+++ b/nextnumber
@@ -5,6 +5,6 @@ shopt -s globstar
 
 for i in 1 2
 do
-  last=$(grep -hv "^prop" **/*.hs | grep -Ewo "$i[0-9]{3}" | sort -n | tail -n 1)
+  last=$(grep -hv "^prop" ./**/*.hs | grep -Ewo "$i[0-9]{3}" | sort -n | tail -n 1)
   echo "Next ${i}xxx: $((last+1))"
 done