diff --git a/src/components/Chat.vue b/src/components/Chat.vue
index c7bf791..6f294a2 100644
--- a/src/components/Chat.vue
+++ b/src/components/Chat.vue
@@ -1234,6 +1234,7 @@ export default {
         })
 
         const promises = inputFiles.map(inputFile => util.sendImage(this.$matrix.matrixClient, this.roomId, inputFile, this.onUploadProgress));
+        this.currentSendOperation = promises;
 
         Promise.all(promises).then(() => {
           this.currentSendOperation = null;
@@ -1260,7 +1261,7 @@ export default {
     cancelSendAttachment() {
       this.$refs.attachment.value = null;
       if (this.currentSendOperation) {
-        this.currentSendOperation.abort();
+        this.currentSendOperation.forEach(o => o.abort());
       }
       this.currentSendOperation = null;
       this.currentFileInputs = null;