diff --git a/zorg/buildbot/builders/sanitizers/buildbot_cmake.sh b/zorg/buildbot/builders/sanitizers/buildbot_cmake.sh
index 380f5d3..9f1fbea 100755
--- a/zorg/buildbot/builders/sanitizers/buildbot_cmake.sh
+++ b/zorg/buildbot/builders/sanitizers/buildbot_cmake.sh
@@ -136,7 +136,7 @@
 if [ ! -d clang_build ]; then
   mkdir clang_build
 fi
-(cd clang_build && cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo ${CMAKE_COMMON_OPTIONS} ${USE_CCACHE} $LLVM) || echo @@@STEP_FAILURE@@@
+(cd clang_build && cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo ${CMAKE_COMMON_OPTIONS} ${USE_CCACHE} $LLVM ) || (rm -rf clang_build ; echo @@@STEP_FAILURE@@@)
 
 BOOTSTRAP_BUILD_TARGETS="clang"
 if [[ "$CHECK_LLD" != "0" ]]; then