diff --git a/tools/test-proxy/Azure.Sdk.Tools.TestProxy/Sanitizers/BodyKeySanitizer.cs b/tools/test-proxy/Azure.Sdk.Tools.TestProxy/Sanitizers/BodyKeySanitizer.cs
index d3b1949a040..9ee1c28428c 100644
--- a/tools/test-proxy/Azure.Sdk.Tools.TestProxy/Sanitizers/BodyKeySanitizer.cs
+++ b/tools/test-proxy/Azure.Sdk.Tools.TestProxy/Sanitizers/BodyKeySanitizer.cs
@@ -1,4 +1,4 @@
-using Azure.Sdk.Tools.TestProxy.Common;
+using Azure.Sdk.Tools.TestProxy.Common;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
 using System;
@@ -65,28 +65,31 @@ public override string SanitizeTextBody(string contentType, string body)
             }
 
             
-            foreach (JToken token in jsonO.SelectTokens(_jsonPath))
+            if (jsonO != null)
             {
-                // HasValues is false for tokens with children. We will not apply sanitization if that is the case.
-                if (!token.HasValues)
+                foreach (JToken token in jsonO.SelectTokens(_jsonPath))
                 {
-                    var originalValue = token.Value<string>();
-
-                    // regex replacement does not support null
-                    if (originalValue == null)
+                    // HasValues is false for tokens with children. We will not apply sanitization if that is the case.
+                    if (!token.HasValues)
                     {
-                        continue;
-                    }
+                        var originalValue = token.Value<string>();
 
-                    var replacement = StringSanitizer.SanitizeValue(originalValue, _newValue, _regexValue, _groupForReplace);
+                        // regex replacement does not support null
+                        if (originalValue == null)
+                        {
+                            continue;
+                        }
 
-                    // this sanitizer should only apply to actual values
-                    // if we attempt to apply a regex update to a jtoken that has a more complex type, throw
-                    token.Replace(JToken.FromObject(replacement));
+                        var replacement = StringSanitizer.SanitizeValue(originalValue, _newValue, _regexValue, _groupForReplace);
 
-                    if(originalValue != replacement)
-                    {
-                        sanitized = true;
+                        // this sanitizer should only apply to actual values
+                        // if we attempt to apply a regex update to a jtoken that has a more complex type, throw
+                        token.Replace(JToken.FromObject(replacement));
+
+                        if (originalValue != replacement)
+                        {
+                            sanitized = true;
+                        }
                     }
                 }
             }