diff --git a/src/Microsoft.Azure.WebJobs/FunctionNameAttribute.cs b/src/Microsoft.Azure.WebJobs/FunctionNameAttribute.cs
index 35e89887e..5c8f45982 100644
--- a/src/Microsoft.Azure.WebJobs/FunctionNameAttribute.cs
+++ b/src/Microsoft.Azure.WebJobs/FunctionNameAttribute.cs
@@ -30,7 +30,8 @@ public FunctionNameAttribute(string name)
 
         /// <summary>
         /// Validation for name. 
+        /// RegexOptions.Compiled is specifically removed as it impacts the cold start.
         /// </summary>
-        public static readonly Regex FunctionNameValidationRegex = new Regex(@"^[a-z][a-z0-9_\-]{0,127}$(?<!^host$)", RegexOptions.Compiled | RegexOptions.IgnoreCase);
+        public static readonly Regex FunctionNameValidationRegex = new Regex(@"^[a-z][a-z0-9_\-]{0,127}$(?<!^host$)", RegexOptions.IgnoreCase);
     }
 }