diff --git a/src/serial/sball.c b/src/serial/sball.c
index cfbbdd1..aa33114 100644
--- a/src/serial/sball.c
+++ b/src/serial/sball.c
@@ -60,7 +60,7 @@ struct event {
 };
 
 static struct event *ev_free_list;
-int evpool_size;
+int sball_evpool_size =0;
 
 static struct event *alloc_event(void);
 static void free_event(struct event *ev);
@@ -662,16 +662,16 @@ static struct event *alloc_event(void)
 		ev_free_list = ev->next;
 	} else {
 		ev = malloc(sizeof *ev);
-		evpool_size++;
+		sball_evpool_size++;
 	}
 	return ev;
 }
 
 static void free_event(struct event *ev)
 {
-	if(evpool_size > 512) {
+	if(sball_evpool_size > 512) {
 		free(ev);
-		evpool_size--;
+		sball_evpool_size--;
 	} else {
 		ev->next = ev_free_list;
 		ev_free_list = ev;
diff --git a/src/spnavd.c b/src/spnavd.c
index c51b120..3c7278a 100644
--- a/src/spnavd.c
+++ b/src/spnavd.c
@@ -48,6 +48,9 @@ static char *fix_path(char *str);
 static char *cfgfile = DEF_CFGFILE;
 static char *logfile = DEF_LOGFILE;
 
+struct cfg cfg;
+int verbose;
+
 int main(int argc, char **argv)
 {
 	int i, pid, ret, become_daemon = 1;
diff --git a/src/spnavd.h b/src/spnavd.h
index fa0a916..99672af 100644
--- a/src/spnavd.h
+++ b/src/spnavd.h
@@ -47,9 +47,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #endif
 
-
-
-struct cfg cfg;
-int verbose;
+extern struct cfg cfg;
+extern int verbose;
 
 #endif	/* SPNAVD_H_ */