diff --git a/util/activate_msys2.sh b/util/activate_msys2.sh
index bb0485302e..f31de48061 100644
--- a/util/activate_msys2.sh
+++ b/util/activate_msys2.sh
@@ -7,6 +7,7 @@ function export_variables {
     export PATH=$PATH:$util_dir/flip/bin
     export PATH=$PATH:$util_dir/avr8-gnu-toolchain/bin
     export PATH=$PATH:$util_dir/gcc-arm-none-eabi/bin
+    export PATH=$PATH:$util_dir/teensy_loader_cli.exe
 }
 
 export_variables