diff --git a/Makefile b/Makefile
index 92b793b..4f7b62b 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ PREFIX=/usr/local
 BINDIR=$(PREFIX)/bin
 MANDIR=$(PREFIX)/share/man
 
-CFLAGS=-Wall -Werror -Wextra -Wpedantic -Wno-unused-parameter -Wconversion
+CFLAGS=-Wall -Werror -Wextra -Wpedantic -Wno-unused-parameter -Wconversion -Wformat-security -Wformat -Wsign-conversion -Wfloat-conversion -Wunused-result
 LIBS=-lwayland-client
 OBJ=wlopm.o wlr-output-power-management-unstable-v1.o xdg-output-unstable-v1.o
 GEN=wlr-output-power-management-unstable-v1.c wlr-output-power-management-unstable-v1.h xdg-output-unstable-v1.c xdg-output-unstable-v1.h
diff --git a/wlopm.c b/wlopm.c
index 8ef3164..d257199 100644
--- a/wlopm.c
+++ b/wlopm.c
@@ -334,7 +334,6 @@ static void sync_handle_done (void *data, struct wl_callback *wl_callback, uint3
 	}
 	else
 	{
-
 		struct Output *output;
 		wl_list_for_each(output, &outputs, link)
 			if (output->operation_failed)