diff --git a/modules/flann/include/opencv2/flann/dist.h b/modules/flann/include/opencv2/flann/dist.h
index 06141256a7..ceb83543f5 100644
--- a/modules/flann/include/opencv2/flann/dist.h
+++ b/modules/flann/include/opencv2/flann/dist.h
@@ -43,6 +43,9 @@ typedef unsigned __int64 uint64_t;
 
 #include "defines.h"
 
+#ifdef __ARM_NEON__
+#include "arm_neon.h"
+#endif
 
 namespace cvflann
 {