diff --git a/Aramis-spatial-diagnostics/Overview.md b/Aramis-spatial-diagnostics/Overview.md
index 5f8ac45..6b86842 100644
--- a/Aramis-spatial-diagnostics/Overview.md
+++ b/Aramis-spatial-diagnostics/Overview.md
@@ -42,7 +42,7 @@ The following spatial diagnostics are installed in the Aramis FEL
 >[SAROP31-PSCD153](Aramis-spatial-diagnostics/SAROP31 PSCD153)  
 
 ## Spontaneous radiation detector  
-**Purpose:** Imaging of spontaneous radiation, primarily for ID commissioning
+**Purpose:** Imaging of spontaneous radiation, primarily for ID commissioning.
 
 > ### Optics hutch - Bernina
 >[SAROP21-PSRD103](Aramis-spatial-diagnostics/SAROP21 PSRD103)