diff --git a/packages/primevue/src/multiselect/style/MultiSelectStyle.js b/packages/primevue/src/multiselect/style/MultiSelectStyle.js
index 0cd50982b..75643a5cf 100644
--- a/packages/primevue/src/multiselect/style/MultiSelectStyle.js
+++ b/packages/primevue/src/multiselect/style/MultiSelectStyle.js
@@ -209,6 +209,7 @@ const theme = ({ dt }) => `
 
 .p-multiselect-fluid {
     display: flex;
+    width: 100%;
 }
 
 .p-multiselect-sm .p-multiselect-label {