diff --git a/contrib/bc/doc/bc.1 b/contrib/bc/doc/bc.1
index 908462c170d4..bb19594421f2 100644
--- a/contrib/bc/doc/bc.1
+++ b/contrib/bc/doc/bc.1
@@ -640,7 +640,7 @@ A major source of differences is
 extensions, where a feature is extended to add more functionality and
 additions, where new features are added. 
 The following is the list of differences and extensions.
-.IP LANG environment
+.IP "LANG environment"
 This version does not conform to the POSIX standard in the processing
 of the LANG environment variable and all environment variables starting
 with LC_.