diff --git a/free-programming-books-pt_PT.md b/free-programming-books-pt_PT.md
index 4db705e60..9ee41e902 100644
--- a/free-programming-books-pt_PT.md
+++ b/free-programming-books-pt_PT.md
@@ -31,4 +31,4 @@
 
 ### Prolog
 
-* [Lógica Computacional (com Prolog)](http://www3.di.uminho.pt/~mjf/pub/LC-Prolog.pdf) - Maria João Frade (PDF)
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+* [Lógica Computacional (com Prolog)](http://www3.di.uminho.pt/~mjf/pub/LC-Prolog.pdf) - Maria João Frade (PDF)