diff --git a/lib/rscons/environment.rb b/lib/rscons/environment.rb
index 8ef8070..47af51d 100644
--- a/lib/rscons/environment.rb
+++ b/lib/rscons/environment.rb
@@ -644,7 +644,7 @@ module Rscons
       case @echo
       when :command
         if command.is_a?(Array)
-          message = command_to_s(command)
+          message = Util.command_to_s(command)
         elsif command.is_a?(String)
           message = command
         elsif short_description.is_a?(String)
@@ -663,7 +663,7 @@ module Rscons
     #
     # @return [void]
     def print_failed_command(command)
-      Ansi.write($stdout, :red, "Failed command was: #{command_to_s(command)}", :reset, "\n")
+      Ansi.write($stdout, :red, "Failed command was: #{Util.command_to_s(command)}", :reset, "\n")
     end
 
     private
@@ -752,17 +752,6 @@ module Rscons
       end
     end
 
-    # Return a string representation of a command.
-    #
-    # @param command [Array<String>]
-    #   The command.
-    #
-    # @return [String]
-    #   The string representation of the command.
-    def command_to_s(command)
-      command.map { |c| c =~ /\s/ ? "'#{c}'" : c }.join(' ')
-    end
-
     # Call a builder's #finalize method after a ThreadedCommand terminates.
     #
     # @param tc [ThreadedCommand]
diff --git a/lib/rscons/util.rb b/lib/rscons/util.rb
index 3326b5d..340c970 100644
--- a/lib/rscons/util.rb
+++ b/lib/rscons/util.rb
@@ -15,6 +15,17 @@ module Rscons
         end
       end
 
+      # Return a string representation of a command.
+      #
+      # @param command [Array<String>]
+      #   The command.
+      #
+      # @return [String]
+      #   The string representation of the command.
+      def command_to_s(command)
+        command.map { |c| c =~ /\s/ ? "'#{c}'" : c }.join(' ')
+      end
+
       # Make a relative path corresponding to a possibly absolute one.
       #
       # @param path [String]