diff --git a/51-php/04.md b/51-php/04.md
index e4ff44a..2cad29e 100644
--- a/51-php/04.md
+++ b/51-php/04.md
@@ -76,7 +76,7 @@ Paul also wanted to teach the Philippians. He knew that God would give him what
 
 Paul told the Philippians that their gift was not only for him. Their gift was also a way for them to worship God. He compared their gift to a sacrifice of food. Both of these things, Paul said, produce smells that made God happy. That is, God accepted both as sacrifices to himself. 
 
-See: Sacrifice
+See: [Sacrifice](../articles/sacrifice.md)
 
 ### How are Christians to be happy?