diff --git a/ChangeLog b/ChangeLog
index 4f6b8e32f..9a2d79250 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -101,6 +101,8 @@
    active (thanks to Adam Wolk).
  + Fixed bug #785, which fixes a broken build on Solaris (thanks to Owen
    Clarke).
+ + Fixed bug #788, which reported regex and readline versions, even though they
+   are not used.
 
 # Untracked Bugs, biggest first.
  + Fixed bug that required the '%YAML' prologue in a YAML import.
diff --git a/src/commands/CmdDiagnostics.cpp b/src/commands/CmdDiagnostics.cpp
index d4e50a9b7..88eb35f96 100644
--- a/src/commands/CmdDiagnostics.cpp
+++ b/src/commands/CmdDiagnostics.cpp
@@ -130,14 +130,6 @@ int CmdDiagnostics::execute (std::string& output)
   out << bold.colorize ("Libraries")
       << "\n";
 
-  out << "  Readline: "
-#ifdef HAVE_LIBREADLINE
-      << std::setbase (16) << RL_READLINE_VERSION
-#else
-      << "n/a"
-#endif
-      << "\n";
-
   out << "       Lua: "
 #ifdef HAVE_LIBLUA
       << LUA_RELEASE
@@ -208,10 +200,6 @@ int CmdDiagnostics::execute (std::string& output)
       << (context.config.getBoolean ("locking") ? "Enabled" : "Disabled")
       << "\n";
 
-  out << "     Regex: "
-      << (context.config.getBoolean ("regex") ? "Enabled" : "Disabled")
-      << "\n";
-
   // Determine rc.editor/$EDITOR/$VISUAL.
   char* peditor;
   if (context.config.get ("editor") != "")