diff --git a/daemon.c b/daemon.c
index d0a6579..3dc0640 100644
--- a/daemon.c
+++ b/daemon.c
@@ -27,6 +27,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
+#include <sys/timespec.h>
 #include <sysexits.h>
 #include <syslog.h>
 #include <unistd.h>
@@ -43,7 +44,7 @@
 
 #define WS " \t"
 
-int restartInterval = 1000;
+struct timespec restartInterval = { .tv_sec = 1 };
 struct Set256 stopExits;
 
 static void configerr(bool exit, const char *format, ...) {
@@ -119,6 +120,12 @@ static void parseExits(char *list) {
 	}
 }
 
+static void parseInterval(const char *millis) {
+	unsigned long ms = strtoul(millis, NULL, 10);
+	restartInterval.tv_sec = ms / 1000;
+	restartInterval.tv_nsec = 1000000 * (ms % 1000);
+}
+
 int main(int argc, char *argv[]) {
 	setprogname(argv[0]);
 
@@ -146,7 +153,7 @@ int main(int argc, char *argv[]) {
 			break; case 'g': groupName = optarg;
 			break; case 'p': pidPath = optarg;
 			break; case 's': parseExits(optarg);
-			break; case 't': restartInterval = strtoul(optarg, NULL, 10);
+			break; case 't': parseInterval(optarg);
 			break; case 'u': userName = optarg;
 			break; default:  return EX_USAGE;
 		}
diff --git a/daemon.h b/daemon.h
index 09cda47..32827aa 100644
--- a/daemon.h
+++ b/daemon.h
@@ -19,7 +19,7 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
-#include <sys/time.h>
+#include <sys/timespec.h>
 #include <unistd.h>
 
 typedef unsigned char byte;
@@ -85,8 +85,8 @@ struct Service {
 	int errPipe[2];
 	struct Line outLine;
 	struct Line errLine;
-	int restartInterval;
-	struct timeval restartTime;
+	struct timespec restartInterval;
+	struct timespec restartDeadline;
 };
 
 extern struct Services {
@@ -100,8 +100,6 @@ void serviceStart(struct Service *service);
 extern char configError[];
 int configParse(const char *path);
 
-extern int restartInterval;
-
 struct Set256 {
 	uint32_t bits[8];
 };
@@ -117,3 +115,4 @@ static inline uint32_t setTest(const struct Set256 *set, byte x) {
 
 enum { StopExit = 127 };
 extern struct Set256 stopExits;
+extern struct timespec restartInterval;