diff --git a/src/CLI.cpp b/src/CLI.cpp
index 5177a0e7c..240a07d9f 100644
--- a/src/CLI.cpp
+++ b/src/CLI.cpp
@@ -374,6 +374,20 @@ void CLI::add (const std::string& arg)
   analyze ();
 }
 
+////////////////////////////////////////////////////////////////////////////////
+// Process raw string into parsed filter.
+//
+void CLI::addRawFilter (const std::string& arg)
+{
+  std::string lexeme;
+  Lexer::Type type;
+  Lexer lex (arg);
+  lex.ambiguity (false);
+
+  while (lex.token (lexeme, type))
+    add (lexeme);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Intended to be called after ::initialize() and ::add(), to perform the final
 // analysis. Analysis is also performed directly after the above, because there
diff --git a/src/CLI.h b/src/CLI.h
index e855db697..c3aa0e692 100644
--- a/src/CLI.h
+++ b/src/CLI.h
@@ -77,6 +77,7 @@ public:
   void entity (const std::string&, const std::string&);
   void initialize (int, const char**);
   void add (const std::string&);
+  void addRawFilter (const std::string& arg);
   void analyze (bool parse = true, bool strict = false);
   void applyOverrides ();
   const std::string getFilter ();
diff --git a/src/commands/CmdCustom.cpp b/src/commands/CmdCustom.cpp
index 1876dab23..4bcd46e4c 100644
--- a/src/commands/CmdCustom.cpp
+++ b/src/commands/CmdCustom.cpp
@@ -82,15 +82,7 @@ int CmdCustom::execute (std::string& output)
   validateSortColumns (sortOrder);
 
   // Prepend the argument list with those from the report filter.
-  std::string lexeme;
-  Lexer::Type type;
-  Lexer lex (reportFilter);
-  lex.ambiguity (false);
-  while (lex.token (lexeme, type))
-    context.cli.add (lexeme);
-
-  // Reparse after tree change.
-  context.cli.analyze ();
+  context.cli.addRawFilter(reportFilter);
 
   // Apply filter.
   handleRecurrence ();