diff --git a/src/core/operations/ObjectIdentifierToHex.mjs b/src/core/operations/ObjectIdentifierToHex.mjs
index 1cd729a1..22419c5d 100644
--- a/src/core/operations/ObjectIdentifierToHex.mjs
+++ b/src/core/operations/ObjectIdentifierToHex.mjs
@@ -28,7 +28,7 @@ class ObjectIdentifierToHex extends Operation {
         this.args = [];
         this.checks = new magicObject([
             {
-                match:  "^\\s*([0-9]{1,3}\.?)+\\s*$",
+                match:  "^\\s*([0-9]{1,3}\\.?)+\\s*$",
                 flags:  "",
                 args:   []
             }