diff --git a/test/GNUmakefile b/test/GNUmakefile
index 9d855c13..c3ee1fde 100644
--- a/test/GNUmakefile
+++ b/test/GNUmakefile
@@ -25,8 +25,6 @@ check:
 clean:
 ifeq ($(MAKE_FILE), $(wildcard $(MAKE_FILE)))
 	-make -f Makefile clean
-else ifeq (build, $(wildcard build))
-	-make -C build clean
 endif
-	rm -rf build
+	rm -rf $(DEFAULT_BUILD_DIR)
 
diff --git a/tutorial/GNUmakefile b/tutorial/GNUmakefile
index 2d16458e..40939802 100644
--- a/tutorial/GNUmakefile
+++ b/tutorial/GNUmakefile
@@ -25,7 +25,7 @@ endif
 clean:
 ifeq ($(MAKE_FILE), $(wildcard $(MAKE_FILE)))
 	-make -f Makefile clean
-else ifeq (build, $(wildcard build))
-	-make -C build clean
+else
+	-make -C $(DEFAULT_BUILD_DIR) clean
 endif
-	rm -rf build
+	rm -rf $(DEFAULT_BUILD_DIR)