diff --git a/action.yml b/action.yml
index d9978b3..622c855 100644
--- a/action.yml
+++ b/action.yml
@@ -19,7 +19,7 @@ inputs:
     required: false
     default: 10
   shell:
-    description: Shell to Use to retry (Default is pwsh)
+    description: Alternate shell to use (defaults to powershell on windows, bash otherwise).  Supports bash, python, pwsh, sh, cmd, and powershell
     required: false
   polling_interval_seconds:
     description: Number of seconds to wait for each check that command has completed running
diff --git a/dist/index.js b/dist/index.js
index 88822fb..d21117f 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -335,7 +335,7 @@ function getExecutable() {
             break;
         }
         default: {
-            throw new Error("Shell " + SHELL + " required");
+            throw new Error("Shell " + SHELL + " not supported.  See https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-syntax-for-github-actions#using-a-specific-shell for supported shells");
         }
     }
     return executable;
diff --git a/src/index.ts b/src/index.ts
index d55da15..824c825 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -92,7 +92,7 @@ function getExecutable(): string {
       break;
     }
     default: {
-      throw new Error(`Shell ${SHELL} required`);
+      throw new Error(`Shell ${SHELL} not supported.  See https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-syntax-for-github-actions#using-a-specific-shell for supported shells`);
     }
   }
   return executable