diff --git a/core/src/components/textarea/textarea.ionic.scss b/core/src/components/textarea/textarea.ionic.scss
index a24b054325..dc1cb16bdc 100644
--- a/core/src/components/textarea/textarea.ionic.scss
+++ b/core/src/components/textarea/textarea.ionic.scss
@@ -84,13 +84,13 @@
 // ----------------------------------------------------------------
 
 // The height should be auto only when auto-grow is enabled.
-:host([auto-grow]) .textarea-wrapper-inner {
+:host([auto-grow=true]) .textarea-wrapper-inner {
   height: auto;
 }
 
 // The min and max height should be inherited if auto-grow is enabled.
 // This allows the textarea to grow and shrink as needed.
-:host([auto-grow]) .native-wrapper {
+:host([auto-grow=true]) .native-wrapper {
   min-height: inherit;
   max-height: inherit;
 }