diff --git a/config/tools/installEpics.pl b/config/tools/installEpics.pl
index d2a1a1194..248e662f7 100755
--- a/config/tools/installEpics.pl
+++ b/config/tools/installEpics.pl
@@ -104,7 +104,7 @@ sub Usage
 	print "Usage:\n";
 	print "\t$tool [ -m mode ] file ... directory\n";
 	print "\n";
-	print "\t-d             Create non-exising directories\n";
+	print "\t-d             Create non-existing directories\n";
 	print "\t-m mode        Set the mode for the installed file";
 		print " (0755 by default)\n";
 	print "\tfile           Name of file\n";
diff --git a/configure/tools/installEpics.pl b/configure/tools/installEpics.pl
index d2a1a1194..248e662f7 100755
--- a/configure/tools/installEpics.pl
+++ b/configure/tools/installEpics.pl
@@ -104,7 +104,7 @@ sub Usage
 	print "Usage:\n";
 	print "\t$tool [ -m mode ] file ... directory\n";
 	print "\n";
-	print "\t-d             Create non-exising directories\n";
+	print "\t-d             Create non-existing directories\n";
 	print "\t-m mode        Set the mode for the installed file";
 		print " (0755 by default)\n";
 	print "\tfile           Name of file\n";