diff --git a/builds/Makefile b/builds/Makefile
index 2b050d2ed04e..b3071db081f4 100644
--- a/builds/Makefile
+++ b/builds/Makefile
@@ -8,6 +8,8 @@ PREFIX=$(abspath $(IOS_DESTDIR)/$(MONOTOUCH_PREFIX)/)
 
 ifeq ($(shell arch),arm64)
 DOTNET_ARCH=arm64
+else ifeq ($(shell sysctl -n sysctl.proc_translated 2>/dev/null),1)
+DOTNET_ARCH=arm64
 else
 DOTNET_ARCH=x64
 endif
@@ -78,7 +80,7 @@ downloads/%: downloads/%.nupkg
 	$(Q) echo "Unzipped $*."
 
 downloads/$(DOTNET_INSTALL_NAME): dotnet-install.sh
-	$(Q) echo "Downloading and installing .NET $(DOTNET_VERSION) into $@..."
+	$(Q) echo "Downloading and installing .NET $(DOTNET_VERSION) ($(DOTNET_ARCH)) into $@..."
 	$(Q) ./dotnet-install.sh --install-dir "$@.tmp" --version "$(DOTNET_VERSION)" --architecture $(DOTNET_ARCH) --no-path $$DOTNET_INSTALL_EXTRA_ARGS
 	$(Q) rm -Rf "$@"
 	$(Q) mv "$@.tmp" "$@"
diff --git a/tests/packaged-macos-tests.mk b/tests/packaged-macos-tests.mk
index 2f21c0c557f8..fa506b9b6beb 100644
--- a/tests/packaged-macos-tests.mk
+++ b/tests/packaged-macos-tests.mk
@@ -7,7 +7,7 @@ include $(TOP)/Make.config
 export TargetFrameworkFallbackSearchPaths:=$(MAC_DESTDIR)/Library/Frameworks/Mono.framework/External/xbuild-frameworks
 export MSBuildExtensionsPathFallbackPathsOverride:=$(MAC_DESTDIR)/Library/Frameworks/Mono.framework/External/xbuild
 
-ifeq ($(shell uname -a),"arm64")
+ifeq ($(shell arch),"arm64")
 IS_ARM64=1
 IS_APPLE_SILICON=1
 endif