diff --git a/audacity.dox b/audacity.dox
index 71179d52354ce3908583c40bb7b4ca2091faa7c1..78d34960608ca0c352f4e053e7634d29903876f6 100644
--- a/audacity.dox
+++ b/audacity.dox
@@ -20,7 +20,7 @@
 HAVE_DOT = YES
 DOT_IMAGE_FORMAT = svg
 
-## These further increased time to about 27 minutes, and space requirements to 400 about MB:
+## These further increased time to about 27 minutes, and space requirements to about 400 MB:
 
 CALL_GRAPH = YES
 CALLER_GRAPH = YES