diff --git a/Doc/lib/libsys.tex b/Doc/lib/libsys.tex
index 8a23fbc28ff..686e50e7eb5 100644
--- a/Doc/lib/libsys.tex
+++ b/Doc/lib/libsys.tex
@@ -410,7 +410,7 @@ else:
   Strings specifying the primary and secondary prompt of the
   interpreter.  These are only defined if the interpreter is in
   interactive mode.  Their initial values in this case are
-  \code{'>>>~'} and \code{'... '}.  If a non-string object is
+  \code{'>>>~'} and \code{'...~'}.  If a non-string object is
   assigned to either variable, its \function{str()} is re-evaluated
   each time the interpreter prepares to read a new interactive
   command; this can be used to implement a dynamic prompt.