diff --git a/zephyr-env.sh b/zephyr-env.sh
index 55e7bf6c70e..4d820a1ce70 100644
--- a/zephyr-env.sh
+++ b/zephyr-env.sh
@@ -35,14 +35,23 @@ fi
 # .zephyrrc in your home directory. It will be automatically
 # run (if it exists) by this script.
 
-uname | grep -q -P "MINGW|MSYS" && PWD_OPT="-W"
+if uname | grep -q -P "MINGW|MSYS"; then
+    win_build=1
+    PWD_OPT="-W"
+else
+    win_build=0
+    PWD_OPT=""
+fi
 
 # identify OS source tree root directory
 export ZEPHYR_BASE=$( builtin cd "$( dirname "$DIR" )" && pwd ${PWD_OPT})
 unset PWD_OPT
 
 scripts_path=${ZEPHYR_BASE}/scripts
-scripts_path=$(echo "/$scripts_path" | sed 's/\\/\//g' | sed 's/://')
+if [ "$win_build" -eq 1 ]; then
+    scripts_path=$(echo "/$scripts_path" | sed 's/\\/\//g' | sed 's/://')
+fi
+unset win_build
 if ! echo "${PATH}" | grep -q "${scripts_path}"; then
     export PATH=${scripts_path}:${PATH}
 fi