diff --git a/Makefile b/Makefile
index c0e5fbcf8..547feb0d2 100644
--- a/Makefile
+++ b/Makefile
@@ -237,7 +237,7 @@ ifndef NOFORTRAN
 	-@echo "LOADOPTS    = $(FFLAGS) $(EXTRALIB)" >> $(NETLIB_LAPACK_DIR)/make.inc
 	-@echo "CC          = $(CC)" >> $(NETLIB_LAPACK_DIR)/make.inc
 	-@echo "override CFLAGS      = $(LAPACK_CFLAGS)" >> $(NETLIB_LAPACK_DIR)/make.inc
-	-@echo "ARCH        = $(AR)" >> $(NETLIB_LAPACK_DIR)/make.inc
+	-@echo "override ARCH        = $(AR)" >> $(NETLIB_LAPACK_DIR)/make.inc
 	-@echo "ARCHFLAGS   = $(ARFLAGS) -ru" >> $(NETLIB_LAPACK_DIR)/make.inc
 	-@echo "RANLIB      = $(RANLIB)" >> $(NETLIB_LAPACK_DIR)/make.inc
 	-@echo "LAPACKLIB   = ../$(LIBNAME)" >> $(NETLIB_LAPACK_DIR)/make.inc
diff --git a/c_check b/c_check
index c564855f3..eb302b71a 100644
--- a/c_check
+++ b/c_check
@@ -121,6 +121,11 @@ if (($architecture eq "x86") && ($os ne Darwin) && ($os ne SunOS)) {
     $binary =32;
 }
 
+if ($architecture eq "riscv64") {
+    $defined = 1;
+    $binary = 64;
+}
+
 if ($compiler eq "PGI") {
     $compiler_name .= " -tp p7"    if ($binary eq "32");
     $compiler_name .= " -tp p7-64" if ($binary eq "64");