diff --git a/recipe/bld.bat b/recipe/bld.bat
index d422766..b2683cd 100644
--- a/recipe/bld.bat
+++ b/recipe/bld.bat
@@ -6,8 +6,6 @@ cd build
 
 @REM CMake does not like paths with \ characters
 set LIBRARY_PREFIX="%LIBRARY_PREFIX:\=/%"
-set BUILD_PREFIX="%BUILD_PREFIX:\=/%"
-set SRC_DIR="%SRC_DIR:\=/%"
 set "CXXFLAGS=-DABSL_CONSUME_DLL %CXXFLAGS%"
 
 cmake -G "Ninja" ^