diff --git a/src/skins/vector/css/matrix-react-sdk/views/voip/CallView.css b/src/skins/vector/css/matrix-react-sdk/views/voip/CallView.css
index 179fd294..8051b4d0 100644
--- a/src/skins/vector/css/matrix-react-sdk/views/voip/CallView.css
+++ b/src/skins/vector/css/matrix-react-sdk/views/voip/CallView.css
@@ -12,4 +12,14 @@ distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-*/
\ No newline at end of file
+*/
+
+.mx_CallView_voice {
+    background-color: #76cfa6;
+    color: #fff;
+    cursor: pointer;
+    text-align: center;
+    padding: 6px;
+    font-weight: bold;
+    font-size: 13px;
+}
\ No newline at end of file