diff --git a/scripts/langindex.json b/scripts/langindex.json
index 5200cc6d6..ed6b18340 100644
--- a/scripts/langindex.json
+++ b/scripts/langindex.json
@@ -1393,6 +1393,7 @@
   "core.course.confirmdeletemodulefiles": "local_moodlemobileapp",
   "core.course.confirmdownload": "local_moodlemobileapp",
   "core.course.confirmdownloadunknownsize": "local_moodlemobileapp",
+  "core.course.confirmdownloadzerosize": "local_moodlemobileapp",
   "core.course.confirmlimiteddownload": "local_moodlemobileapp",
   "core.course.confirmpartialdownloadsize": "local_moodlemobileapp",
   "core.course.contents": "local_moodlemobileapp",
diff --git a/src/assets/lang/en.json b/src/assets/lang/en.json
index e0fb0fd71..2256cf466 100644
--- a/src/assets/lang/en.json
+++ b/src/assets/lang/en.json
@@ -1391,6 +1391,7 @@
     "core.course.confirmdeletemodulefiles": "Are you sure you want to delete these files?",
     "core.course.confirmdownload": "You are about to download {{size}}.{{availableSpace}} Are you sure you want to continue?",
     "core.course.confirmdownloadunknownsize": "It was not possible to calculate the size of the download.{{availableSpace}} Are you sure you want to continue?",
+    "core.course.confirmdownloadzerosize": "You are about to start downloading.{{availableSpace}} Are you sure you want to continue?",
     "core.course.confirmlimiteddownload": "You are not currently connected to Wi-Fi. ",
     "core.course.confirmpartialdownloadsize": "You are about to download <strong>at least</strong> {{size}}.{{availableSpace}} Are you sure you want to continue?",
     "core.course.contents": "Contents",
diff --git a/src/core/course/lang/en.json b/src/core/course/lang/en.json
index 2d2d0156f..2fe5518e9 100644
--- a/src/core/course/lang/en.json
+++ b/src/core/course/lang/en.json
@@ -8,6 +8,7 @@
     "confirmdeletemodulefiles": "Are you sure you want to delete these files?",
     "confirmdownload": "You are about to download {{size}}.{{availableSpace}} Are you sure you want to continue?",
     "confirmdownloadunknownsize": "It was not possible to calculate the size of the download.{{availableSpace}} Are you sure you want to continue?",
+    "confirmdownloadzerosize": "You are about to start downloading.{{availableSpace}} Are you sure you want to continue?",
     "confirmpartialdownloadsize": "You are about to download <strong>at least</strong> {{size}}.{{availableSpace}} Are you sure you want to continue?",
     "confirmlimiteddownload": "You are not currently connected to Wi-Fi. ",
     "contents": "Contents",
diff --git a/src/providers/utils/dom.ts b/src/providers/utils/dom.ts
index 6bc976dd6..91e4b7ad1 100644
--- a/src/providers/utils/dom.ts
+++ b/src/providers/utils/dom.ts
@@ -200,7 +200,7 @@ export class CoreDomUtilsProvider {
                     { size: readableSize, availableSpace: availableSpace }));
             } else if (alwaysConfirm || size.size >= wifiThreshold ||
                 (this.appProvider.isNetworkAccessLimited() && size.size >= limitedThreshold)) {
-                message = message || 'core.course.confirmdownload';
+                message = message || (size.size === 0 ? 'core.course.confirmdownloadzerosize' : 'core.course.confirmdownload');
 
                 return this.showConfirm(wifiPrefix + this.translate.instant(message,
                     { size: readableSize, availableSpace: availableSpace }));