diff --git a/source/includes/extracts-wired-tiger.yaml b/source/includes/extracts-wired-tiger.yaml
index a6b1ae97c6e..9e3e83dd1f4 100644
--- a/source/includes/extracts-wired-tiger.yaml
+++ b/source/includes/extracts-wired-tiger.yaml
@@ -172,7 +172,7 @@ content: |
    Starting in 3.4, the WiredTiger internal cache, by default, will use
    the larger of either:
 
-   - 50% of RAM minus 1 GB, or
+   - 50% of (RAM - 1 GB), or
 
    - 256 MB.
 ---