diff --git a/prysm.sh b/prysm.sh
index dac8d9e1f..1d18833d6 100755
--- a/prysm.sh
+++ b/prysm.sh
@@ -86,7 +86,7 @@ esac
 if [ "$system" == "windows" ]; then
 	arch="amd64.exe"
 elif [[ "$os_arch_suffix" == *"arm64"* ]]; then
-  arch=$os_arch_suffix
+  arch="arm64"
 fi
 
 mkdir -p $wrapper_dir