diff --git a/tests/ZZ_hangman b/tests/ZZ_hangman
index cc81c36d..b8f4a682 100755
--- a/tests/ZZ_hangman
+++ b/tests/ZZ_hangman
@@ -27,7 +27,7 @@ fi
 echo 0xf > i915_ring_stop
 echo "rings stopped"
 
-$oldpath/$SOURCE_DIR/gem_exec_nop > /dev/null
+(cd $oldpath; $SOURCE_DIR/gem_exec_nop) > /dev/null
 
 if cat i915_error_state | grep -v "no error state collected" > /dev/null ; then
 	echo "gpu hang correctly dectected"