diff --git a/Makefile b/Makefile
index 64e1d2f..c7c566a 100644
--- a/Makefile
+++ b/Makefile
@@ -39,7 +39,7 @@ pdf-clean:
 	$(MAKE) clean
 
 clean: pdf-clean
-	$(RM) $(OBJETS) "$(EXE).$(EXE_EXT)" "$(ARCHIVE)"
+	-$(RM) $(OBJETS) "$(EXE).$(EXE_EXT)" "$(ARCHIVE)"
 
 archive: pdf-make
 	cp "$(PDF_LOCATION)/$(PDF_FILE)" .