diff --git a/pm3 b/pm3
index f92ce9bd7..79ea38768 100755
--- a/pm3
+++ b/pm3
@@ -474,7 +474,7 @@ fi
 
 HOSTOS=$(uname | awk '{print toupper($0)}')
 if [ "$HOSTOS" = "LINUX" ]; then
-    if uname -a|grep -q Microsoft; then
+    if uname -a|grep -qi Microsoft; then
         # First try finding it using the PATH environment variable
         PSHEXE=$(command -v powershell.exe 2>/dev/null)