diff --git a/src/lib/chips/chips.scss b/src/lib/chips/chips.scss
index 4fda74c06a9f..541e9cc2bb13 100644
--- a/src/lib/chips/chips.scss
+++ b/src/lib/chips/chips.scss
@@ -97,4 +97,5 @@ $mat-chip-input-margin: 3px;
 input.mat-chip-input {
   width: $mat-chip-input-width;
   margin: $mat-chip-input-margin;
+  flex: 1 0 $mat-chip-input-width;
 }