diff --git a/doc/post-processing-filters.md b/doc/post-processing-filters.md
index af2785c589..9ee958ceb1 100644
--- a/doc/post-processing-filters.md
+++ b/doc/post-processing-filters.md
@@ -80,7 +80,7 @@ After the resulted frame is produced, the frame intrinsic parameters are recalcu
 
 Controls | Operation |  Range | Default
 :------: | :-------- | :---- | :----:
-Rotation| The frame rotation in degrees | Discrete steps: 0, 90, 180, -90| 0 degree
+Rotation| The frame rotation in degrees | Discrete steps: 0, 90, 180, -90| 0° 
 
 ## Design and Implementation
 Post-processing modules are encapsulated into self-contained processing blocks, that provide for the following key requirements: