diff --git a/README.md b/README.md
index 51ef53b..f167ecc 100644
--- a/README.md
+++ b/README.md
@@ -29,4 +29,5 @@ chmod +x bml.sh
 ```
 
 ## Bugs
-- :)
+- Throws error and exists on MacOS and WSL \
+  Solution run: `rm osdetect.sh`
diff --git a/bml.sh b/bml.sh
index 8db0eb5..2ed02ee 100755
--- a/bml.sh
+++ b/bml.sh
@@ -23,4 +23,5 @@ lightgreen=`tput setaf 10`
 yellow=`tput setaf 11`
 reset=`tput sgr0`
 
+source osdetect.sh 2>/dev/null
 source readpass.sh
diff --git a/osdetect.sh b/osdetect.sh
new file mode 100644
index 0000000..9a31097
--- /dev/null
+++ b/osdetect.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+if [ "uname -r | grep -oE microsoft" = "microsoft" ]
+        then
+                echo "${red}WSL Not Supported!${reset}" 1>&2
+                exit
+elif [ "uname -a | grep -oE Darwin | tail -n1" = "Darwin" ]
+        then
+                echo "${red}MacOS Not Supported!${reset}" 1>&2
+                exit
+else
+                :
+fi
+
+source readpass.sh