diff --git a/src/2_coordinates.md b/src/2_coordinates.md
index 5998967b602c045053e7b88221cf2a7d00c051bb..9018b5964f0772f10e1a61ff4eb3374eb5258074 100644
--- a/src/2_coordinates.md
+++ b/src/2_coordinates.md
@@ -358,7 +358,7 @@ We have discussed four different coordinate systems:
 2.  !!! tip "Polar coordinates" 
     $${\bf r} = (r, \phi).$$ This system can be used in two
     dimensions. It is particularly suitable for systems with circular symmetry or functions
-    given in terms of these coordinates.
+    given in terms of these coordinates. \\
     Infinitesimal distance: $$ds^2 = dr^2 + r^2 d\phi^2.$$
     Infinitesimal area: $$dA = r dr d\varphi.$$