diff --git a/python/mozbuild/mozbuild/telemetry.py b/python/mozbuild/mozbuild/telemetry.py
index ac6506fdb542a..c4e65e01e686e 100644
--- a/python/mozbuild/mozbuild/telemetry.py
+++ b/python/mozbuild/mozbuild/telemetry.py
@@ -1492,12 +1492,7 @@
 (
 )
         
-info
-[
-'
 physical_cores
-'
-]
 =
 psutil
 .
@@ -1508,6 +1503,22 @@
 False
 )
         
+if
+physical_cores
+is
+not
+None
+:
+            
+info
+[
+'
+physical_cores
+'
+]
+=
+physical_cores
+        
 #
 total
 on