diff --git a/rdo.c b/rdo.c
index 37018f6..0d28ca6 100644
--- a/rdo.c
+++ b/rdo.c
@@ -47,7 +47,7 @@ void runprog(char** program_argv) {
 
 int main(int argc, char** argv) {
 	char username[64], wrong_pw_sleep[64], session_ttl[64], password[128];
-	unsigned int sleep_ms, tries, ts_ttl;
+	unsigned int sleep_us, tries, ts_ttl;
 
 	if (argc == 1) {
 		printf("RootDO version: %s\n\n", VERSION);
@@ -70,7 +70,7 @@ int main(int argc, char** argv) {
 	getconf(fp, "username", username, sizeof(username));
 	getconf(fp, "wrong_pw_sleep", wrong_pw_sleep, sizeof(wrong_pw_sleep));
 	getconf(fp, "session_ttl", session_ttl, sizeof(session_ttl));
-	sleep_ms = atoi(wrong_pw_sleep) * 1000;
+	sleep_us = atoi(wrong_pw_sleep) * 1000;
 	ts_ttl = atoi(session_ttl) * 60;
 
 	fclose(fp);
@@ -111,7 +111,7 @@ int main(int argc, char** argv) {
 			runprog(&argv[1]);
 		}
 
-		usleep(sleep_ms);
+		usleep(sleep_us);
 		fprintf(stderr, "Wrong password.\n");
 		tries++;
 	}