diff --git a/src/opnsense/mvc/app/models/OPNsense/TrafficShaper/TrafficShaper.xml b/src/opnsense/mvc/app/models/OPNsense/TrafficShaper/TrafficShaper.xml
index 07b2111d6..232fe03ad 100644
--- a/src/opnsense/mvc/app/models/OPNsense/TrafficShaper/TrafficShaper.xml
+++ b/src/opnsense/mvc/app/models/OPNsense/TrafficShaper/TrafficShaper.xml
@@ -58,7 +58,7 @@
                 </origin>
                 <description type="TextField">
                     <Required>Y</Required>
-                    <mask>/^([\t\n\v\f\r 0-9a-zA-Z.,_\x{00A0}-\x{FFFF}]){1,255}$/u</mask>
+                    <mask>/^([\t\n\v\f\r 0-9a-zA-Z.\-,_\x{00A0}-\x{FFFF}]){1,255}$/u</mask>
                     <ValidationMessage>Description should be a string between 1 and 255 characters</ValidationMessage>
                 </description>
             </pipe>
@@ -104,7 +104,7 @@
                 </mask>
                 <description type="TextField">
                     <Required>Y</Required>
-                    <mask>/^([\t\n\v\f\r 0-9a-zA-Z.,_\x{00A0}-\x{FFFF}]){1,255}$/u</mask>
+                    <mask>/^([\t\n\v\f\r 0-9a-zA-Z.\-,_\x{00A0}-\x{FFFF}]){1,255}$/u</mask>
                     <ValidationMessage>Description should be a string between 1 and 255 characters</ValidationMessage>
                 </description>
                 <origin type="TextField">
@@ -202,7 +202,7 @@
                 </target>
                 <description type="TextField">
                     <Required>N</Required>
-                    <mask>/^([\t\n\v\f\r 0-9a-zA-Z.,_\x{00A0}-\x{FFFF}]){0,255}$/u</mask>
+                    <mask>/^([\t\n\v\f\r 0-9a-zA-Z.\-,_\x{00A0}-\x{FFFF}]){0,255}$/u</mask>
                 </description>
                 <origin type="TextField">
                     <Required>N</Required>