diff --git a/Makefile b/Makefile
index fc21cd0..10e21ac 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,7 @@ BINDIR = $(PREFIX)/bin
 
 LDFLAGS != pkg-config --libs libnotify
 INCFLAGS != pkg-config --cflags libnotify
-CFLAGS = -O3 -march=native -mtune=native -pipe -s -std=c99 -flto -pedantic -Wall $(INCFLAGS)
+CFLAGS = -Os -march=native -mtune=native -pipe -s -std=c99 -flto -pedantic -Wall $(INCFLAGS)
 
 SRC = ssm.c
 
diff --git a/ssm.c b/ssm.c
index 353b855..85aa84a 100644
--- a/ssm.c
+++ b/ssm.c
@@ -24,7 +24,7 @@ typedef struct {
 } event;
 
 char *
-get_database_path()
+get_database_path(void)
 {
 	char *db = DATABASE_PATH;
 	char *db_path;