diff --git a/script/install.sh b/script/install.sh
index 92635f1f..74d90c1c 100755
--- a/script/install.sh
+++ b/script/install.sh
@@ -1197,7 +1197,7 @@ write_env_vars() {
     echo "set _OLD_D_PATH=%PATH%"
     echo "set PATH=${DUB_BIN_PATH:+$(cygpath -w "${DUB_BIN_PATH}");}${winpath};%PATH%"
     if [[ $PROCESSOR_ARCHITECTURE != x86 ]]; then
-        echo "set PATH=${winpath}64;%PATH%"
+        echo "set PATH=${winpath};%${winpath}64;PATH%"
     fi
 } > "$ROOT/$1/activate.bat"
     fi