diff --git a/src/Action/Issue/Extraction.psm1 b/src/Action/Issue/Extraction.psm1
index 5f86a9b..98b50c1 100644
--- a/src/Action/Issue/Extraction.psm1
+++ b/src/Action/Issue/Extraction.psm1
@@ -75,6 +75,7 @@ function Show-ExtractionHelpDoc {
         [Parameter(Mandatory = $true)]
         [Int] $IssueID,
         [Parameter(Mandatory = $true)]
+        [AllowEmptyString()]
         [string] $IssueBody
     )