diff --git a/install.bat b/install.bat
index 09cceba..3ae8bbd 100644
--- a/install.bat
+++ b/install.bat
@@ -10,8 +10,8 @@ copy libs\implementations.sld "%ProgramFiles%\compile-scheme\libs\" > nul
 copy libs\library-util.sld "%ProgramFiles%\compile-scheme\libs\" > nul
 copy libs\util.sld "%ProgramFiles%\compile-scheme\libs\" > nul
 
-set pathone=%PATH: =_%
-set pathtwo=%pathone:compile-scheme=%
+set pathone='%PATH: =_%'
+set pathtwo='%pathone:compile-scheme=%'
 
 if not "%pathone%"=="%pathtwo%" setx PATH "%PATH%;%ProgramFiles%\compile-scheme"