diff --git a/configure/tools/mkmf.pl b/configure/tools/mkmf.pl
index d540ea46a..13f0b0c7a 100755
--- a/configure/tools/mkmf.pl
+++ b/configure/tools/mkmf.pl
@@ -32,7 +32,7 @@ my %output;
 my @includes;
 
 use vars qw( $opt_d $opt_m );
-getopts( 'dm:' ) || die "\aSyntax: $0 [-d] [-f dependsFile] includeDirs objFile srcFile\n";
+getopts( 'dm:' ) || die "\aSyntax: $0 [-d] [-m dependsFile] includeDirs objFile srcFile\n";
 my $debug = $opt_d;
 my $depFile = $opt_m;