diff --git a/libctru/include/3ds/services/am.h b/libctru/include/3ds/services/am.h
index d02650b..7539c68 100644
--- a/libctru/include/3ds/services/am.h
+++ b/libctru/include/3ds/services/am.h
@@ -439,3 +439,6 @@ Result AM_ImportCertificate(u32 certSize, void* cert);
  * @param titleIds Title IDs to finalize.
  */
 Result AM_CommitImportTitlesAndUpdateFirmwareAuto(FS_MediaType mediaType, u32 titleCount, bool temp, u64* titleIds);
+
+/// Resets play count of all installed demos by deleting their launch info.
+Result AM_DeleteAllDemoLaunchInfos(void);
diff --git a/libctru/source/services/am.c b/libctru/source/services/am.c
index 4d8e640..3b18aa6 100644
--- a/libctru/source/services/am.c
+++ b/libctru/source/services/am.c
@@ -878,3 +878,15 @@ Result AM_CommitImportTitlesAndUpdateFirmwareAuto(FS_MediaType mediaType, u32 ti
 
 	return (Result)cmdbuf[1];
 }
+
+Result AM_DeleteAllDemoLaunchInfos(void)
+{
+	Result ret = 0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = IPC_MakeHeader(0x827,0,0); // 0x8270000
+
+	if(R_FAILED(ret = svcSendSyncRequest(amHandle))) return ret;
+
+	return (Result)cmdbuf[1];
+}