diff --git a/src/engine/jam.h b/src/engine/jam.h
index 2921c5c3f..d3c39a3f6 100644
--- a/src/engine/jam.h
+++ b/src/engine/jam.h
@@ -468,7 +468,7 @@
  */
 
 # ifndef MAXLINE
-# define MAXLINE 10240	/* longest 'together' actions' */
+# define MAXLINE 102400	/* longest 'together' actions' */
 # endif
 
 # ifndef EXITOK