diff --git a/gadget/4.0/README.md b/gadget/4.0/README.md
index d6273134ccb87f29c978a0a685b0cf57ec804d22..9f98aeedf0c6f9983a841d77a2428050d5e977ec 100644
--- a/gadget/4.0/README.md
+++ b/gadget/4.0/README.md
@@ -120,7 +120,7 @@ Gravity is computed with the TreePM algorithm at expansion order p=3. Three outp
 [Download test Case B](./gadget/4.0/gadget4-caseB.tar.gz)
 
 
-**C) `Adiabatic collapse of a gas sphere` **
+**C) `Adiabatic collapse of a gas sphere`**
 
 This simulation in G2-gassphere considers the gravitational collapse of a self-gravitating sphere of gas which initially has a 1/r density profile and a very low temperature. The gas falls under its own weight to the centre, where it bounces back and a strong shock wave that moves outwards develops. The simulation uses Newtonian physics in a natural system of units (G=1).