diff --git a/lib/classes/Variables.js b/lib/classes/Variables.js
index f42bd4cda..469aa79bd 100644
--- a/lib/classes/Variables.js
+++ b/lib/classes/Variables.js
@@ -838,11 +838,10 @@ class Variables {
           }
           // truthy or non-empty strings
           return true;
-        } else {
-          throw new this.serverless.classes.Error(
-            'Unexpected strToBool input; expected either "true", "false", "0", or "1".'
-          );
         }
+        throw new this.serverless.classes.Error(
+          'Unexpected strToBool input; expected either "true", "false", "0", or "1".'
+        );
       }
       // Cast non-string inputs
       return Boolean(variableString);