diff --git a/.changeset/fuzzy-impalas-swim.md b/.changeset/fuzzy-impalas-swim.md
new file mode 100644
index 000000000..d89e8f668
--- /dev/null
+++ b/.changeset/fuzzy-impalas-swim.md
@@ -0,0 +1,5 @@
+---
+'gitbook': patch
+---
+
+Fix responsive class for SearchInput button
diff --git a/packages/gitbook/src/components/Search/SearchInput.tsx b/packages/gitbook/src/components/Search/SearchInput.tsx
index 8ac68c38b..f74b583eb 100644
--- a/packages/gitbook/src/components/Search/SearchInput.tsx
+++ b/packages/gitbook/src/components/Search/SearchInput.tsx
@@ -19,7 +19,7 @@ interface SearchInputProps {
 }
 
 // Size classes for medium size button
-const sizeClasses = ['text-sm', 'px-3.5', 'py-1.5', 'circular-corners:px-4'];
+const sizeClasses = ['text-sm', 'px-3.5', 'py-1.5', 'md:circular-corners:px-4'];
 
 /**
  * Input to trigger search.