diff --git a/tools_bin/ngcp-panel-create-keys b/tools_bin/ngcp-panel-create-keys
index 562c5f5c8d..1575d62fd6 100755
--- a/tools_bin/ngcp-panel-create-keys
+++ b/tools_bin/ngcp-panel-create-keys
@@ -5,6 +5,7 @@ use warnings;
 
 use Getopt::Long qw(GetOptions);
 use Pod::Usage qw(pod2usage);
+use Fcntl;
 use File::Basename qw(fileparse);
 use File::Path qw(make_path);