diff --git a/xml/payloads.xml b/xml/payloads.xml
index e6117e02d..fc01cd3ba 100644
--- a/xml/payloads.xml
+++ b/xml/payloads.xml
@@ -529,7 +529,7 @@ Formats:
         <clause>1</clause>
         <where>1</where>
         <ptype>2</ptype>
-        <prefix>'||(SELECT [RANDNUM1] FROM DUAL WHERE [RANDNUM]=[RANDNUM]</prefix>
+        <prefix>'||(SELECT '[RANDSTR]' FROM DUAL WHERE [RANDNUM]=[RANDNUM]</prefix>
         <suffix>)||'</suffix>
     </boundary>
 
@@ -538,7 +538,7 @@ Formats:
         <clause>1</clause>
         <where>1</where>
         <ptype>2</ptype>
-        <prefix>'||(SELECT [RANDNUM1] WHERE [RANDNUM]=[RANDNUM]</prefix>
+        <prefix>'||(SELECT '[RANDSTR]' WHERE [RANDNUM]=[RANDNUM]</prefix>
         <suffix>)||'</suffix>
     </boundary>