diff --git a/Dangerfile b/Dangerfile
index e098e106..18571079 100644
--- a/Dangerfile
+++ b/Dangerfile
@@ -14,7 +14,7 @@ if has_source_changes && no_changelog_entry && not_declared_trivial
 end
 
 # Docs are regenerated when releasing
-has_doc_changes = !git.modified_files.grep(/docs/).empty?
+has_doc_changes = !git.modified_files.grep(/docs\//).empty?
 if has_doc_changes
   warn("Docs are regenerated when creating new releases.")
 end
diff --git a/build_docs.sh b/build_docs.sh
index 9c888ce6..e0f52b28 100755
--- a/build_docs.sh
+++ b/build_docs.sh
@@ -1,5 +1,10 @@
 #!/bin/bash
 
+if ! which jazzy >/dev/null; then
+  echo "Jazzy not detected: You can download it from https://github.com/realm/jazzy"
+  exit
+fi
+
 # Docs by jazzy
 # https://github.com/realm/jazzy
 # ------------------------------