diff --git a/51-php/03.md b/51-php/03.md
index 955f044..e066471 100644
--- a/51-php/03.md
+++ b/51-php/03.md
@@ -128,7 +128,7 @@ Paul did not say who the enemies of Jesus were. However, he said some things:
 
 See: False Teacher; Law of Moses; Atone (Atonement); Hell; Sin (Ashamed); World
 
-### How are christians citizens of heaven?
+### How are Christians citizens of heaven?
 
 Paul told the Philippian believers to live in a way that was “worthy of (ἀξίως/g516)” the gospel of Jesus (see: 1:27). Paul used the Greek word “live as a citizen (πολιτεύομαι/g4176),” which usually meant for a free person in a city to do everything he should do.