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-rw-r--r--lib/sisu/v3/manifest.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sisu/v3/manifest.rb b/lib/sisu/v3/manifest.rb
index 743bc090..fdacf164 100644
--- a/lib/sisu/v3/manifest.rb
+++ b/lib/sisu/v3/manifest.rb
@@ -697,7 +697,7 @@ WOK
@manifest[:html] << %{<tr><th class="left"><p class="bold_left">#{@translate.topic_register}:</p></th><td>\n}
@md.topic_register_array.each do |t|
t.each_with_index do |st,i|
- if st.class==Array
+ if st.is_a?(Array)
st.each do |v|
@manifest[:html] << %{<p class="it#{i}">#{v}</p>\n}
end