diff --git a/cleanLocalShapes.bat b/cleanLocalShapes.bat
index de67474..4ac4aa4 100644
--- a/cleanLocalShapes.bat
+++ b/cleanLocalShapes.bat
@@ -2,9 +2,9 @@ if exist "%~dp0_setenv.bat" (
     REM echo Lade lokale Umgebungseinstellungen aus _setenv.bat...
     call "%~dp0_setenv.bat"
 )
-if defined RDCONFIGURATOR_INSTALL_DIR (
+if not defined RDCONFIGURATOR_INSTALL_DIR (
 	echo Error RDCONFIGURATOR_INSTALL_DIR not defined
-)else (
+) else (
 	del %RDCONFIGURATOR_INSTALL_DIR%\props\shape_*.txt
 	del %RDCONFIGURATOR_INSTALL_DIR%\props\Copy_*.txt
 	del %RDCONFIGURATOR_INSTALL_DIR%\svg\shape_*.xml
@@ -13,9 +13,9 @@ if defined RDCONFIGURATOR_INSTALL_DIR (
 )
 
 
-if defined RDCONFIGURATOR_GIT_DIR (
+if not defined RDCONFIGURATOR_GIT_DIR (
 	echo Error  not defined
-)else (
+) else (
 	del %RDCONFIGURATOR_GIT_DIR%\props\shape_*.txt
 	del %RDCONFIGURATOR_GIT_DIR%\props\Copy_*.txt
 	del %RDCONFIGURATOR_GIT_DIR%\svg\shape_*.xml