diff --git a/include/FastFAM.h b/include/FastFAM.h
index 80e1a7e5fc6f804dc17f8c0cd95362e3f929fb34..b81008e8739d918e681d86e7eb363b2112d7bc7c 100644
--- a/include/FastFAM.h
+++ b/include/FastFAM.h
@@ -19,8 +19,10 @@
 #ifndef GCTA2_FASTFAM_H
 #define GCTA2_FASTFAM_H
 
-#ifndef EIGEN_USE_MKL_ALL
-#define EIGEN_USE_MKL_ALL
+#if !defined(__aarch64__)
+    #ifndef EIGEN_USE_MKL_ALL
+    #define EIGEN_USE_MKL_ALL
+    #endif
 #endif
 
 #include "Logger.h"
diff --git a/main/eigen_func.h b/main/eigen_func.h
index b137ca3504845d4b11bbe672666e81078a8babf5..01f770e02659ec8a1b7e8209726804444ec336ea 100644
--- a/main/eigen_func.h
+++ b/main/eigen_func.h
@@ -12,8 +12,10 @@
 #ifndef _EIGENFUNC_H
 #define _EIGENFUNC_H
 
-#ifndef EIGEN_USE_MKL_ALL
-#define EIGEN_USE_MKL_ALL
+#if !defined(__aarch64__)
+    #ifndef EIGEN_USE_MKL_ALL
+    #define EIGEN_USE_MKL_ALL
+    #endif
 #endif
 
 #include "CommFunc.h"
diff --git a/main/gcta.h b/main/gcta.h
index a6049e8453dbf07b7ff122755faa211edc62f6d7..d23a857a8c3252eeedd443e2b1a8e32e3b1448b1 100644
--- a/main/gcta.h
+++ b/main/gcta.h
@@ -17,8 +17,10 @@
 #define EIGEN_YES_I_KNOW_SPARSE_MODULE_IS_NOT_STABLE_YET
 #endif
 
-#ifndef EIGEN_USE_MKL_ALL
-#define EIGEN_USE_MKL_ALL
+#if !defined(__aarch64__)
+    #ifndef EIGEN_USE_MKL_ALL
+    #define EIGEN_USE_MKL_ALL
+    #endif
 #endif
 
 #include <cstdio>
diff --git a/main/ld.cpp b/main/ld.cpp
index cd8734a867f756ef910929fc3b96affb4922f288..835743271a98266b69b3148b2c9f158454459c61 100644
--- a/main/ld.cpp
+++ b/main/ld.cpp
@@ -1005,7 +1005,7 @@ void gcta::calcu_max_ld_rsq_blk(eigenVector &multi_rsq, eigenVector &multi_rsq_a
         }
 
 
-        SelfAdjointEigenSolver<MatrixXf> pca(rsq_sub.array());
+        SelfAdjointEigenSolver<MatrixXf> pca(rsq_sub);
 
                 // debug
        // ofstream tmp("tmp_R.txt");
diff --git a/src/FastFAM.cpp b/src/FastFAM.cpp
index f86d6c3b97c8cba7e9115a4f4bd9edaabe32840f..d4b8fcb0be9bfda44c2397370a75a633a9f0525e 100644
--- a/src/FastFAM.cpp
+++ b/src/FastFAM.cpp
@@ -21,7 +21,11 @@
 #include <cmath>
 #include <algorithm>
 #include <Eigen/SparseCholesky>
-#include <Eigen/PardisoSupport>
+
+#if !defined(__aarch64__)
+    #include <Eigen/PardisoSupport>
+#endif
+
 #include <Eigen/IterativeLinearSolvers>
 #include <Eigen/Sparse>
 #include <sstream>