diff --git a/apps/plugins/mpegplayer/disk_buf.c b/apps/plugins/mpegplayer/disk_buf.c
index defd8ef81d..4f37bfa5bf 100644
--- a/apps/plugins/mpegplayer/disk_buf.c
+++ b/apps/plugins/mpegplayer/disk_buf.c
@@ -859,7 +859,7 @@ bool disk_buf_init(void)
     if (disk_buf.start == NULL)
         return false;
 
-#ifdef PROC_NEEDS_CACHEALIGN
+#if NUM_CORES > 1
     CACHEALIGN_BUFFER(disk_buf.start, disk_buf.size);
     disk_buf.start = UNCACHED_ADDR(disk_buf.start);
 #endif