diff --git a/packages/bot/__tests__/units/methods.test.ts b/packages/bot/__tests__/units/methods.test.ts
index d0da8f4a0..a9b03b147 100644
--- a/packages/bot/__tests__/units/methods.test.ts
+++ b/packages/bot/__tests__/units/methods.test.ts
@@ -161,4 +161,9 @@ test('addKeyword debe rechazar array vacío', () => {
     assert.throws(() => addKeyword([] as any), /empty/i)
 })
 
+test('addKeyword debe rechazar strings vacíos dentro del array', () => {
+    assert.throws(() => addKeyword(['']), /empty/i)
+    assert.throws(() => addKeyword(['hola', '']), /empty/i)
+})
+
 test.run()
diff --git a/packages/bot/src/io/methods/addKeyword.ts b/packages/bot/src/io/methods/addKeyword.ts
index 235c63fca..f568a90f0 100644
--- a/packages/bot/src/io/methods/addKeyword.ts
+++ b/packages/bot/src/io/methods/addKeyword.ts
@@ -25,10 +25,8 @@ const addKeyword = <P = any, B = any>(
         throw new Error('DEBE_SER_STRING_ARRAY_REGEX')
     }
 
-    // Un keyword vacío nunca puede matchear nada: casi siempre es un error de
-    // configuración (p. ej. una env var sin definir). Fallamos rápido en lugar
-    // de registrar un flow muerto que nunca se dispara.
-    if (keyword.length === 0) {
+    // Empty entries become match-all regular expressions in FlowClass.
+    if (keyword.length === 0 || (Array.isArray(keyword) && keyword.some((item) => item.length === 0))) {
         throw new Error('KEYWORD_CANNOT_BE_EMPTY')
     }