diff --git a/ui/src/Components/SilenceModal/SilenceForm.tsx b/ui/src/Components/SilenceModal/SilenceForm.tsx
index 6382ea15c..4fa78e0a4 100644
--- a/ui/src/Components/SilenceModal/SilenceForm.tsx
+++ b/ui/src/Components/SilenceModal/SilenceForm.tsx
@@ -202,7 +202,7 @@ const SilenceForm: FC<{
         <TooltipWrapper title="Add a matcher">
           <button
             type="button"
-            className="btn btn-outline-secondary"
+            className="btn btn-sm btn-outline-secondary"
             onClick={addMore}
           >
             <FontAwesomeIcon icon={faPlus} fixedWidth />
diff --git a/ui/src/Components/SilenceModal/SilenceMatch/index.tsx b/ui/src/Components/SilenceModal/SilenceMatch/index.tsx
index 3d23ce070..f80e394b1 100644
--- a/ui/src/Components/SilenceModal/SilenceMatch/index.tsx
+++ b/ui/src/Components/SilenceModal/SilenceMatch/index.tsx
@@ -55,7 +55,7 @@ const SilenceMatch: FC<{
           <TooltipWrapper title="Remove this matcher">
             <button
               type="button"
-              className="btn btn-outline-danger"
+              className="btn btn-sm btn-outline-danger"
               onClick={onDelete}
             >
               <FontAwesomeIcon icon={faTrash} fixedWidth />