diff --git a/src/haproxy.c b/src/haproxy.c
index 47cd915..617116c 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -3009,7 +3009,7 @@
 		/* if in master-worker mode, write the PID of the father */
 		if (global.mode & MODE_MWORKER) {
 			char pidstr[100];
-			snprintf(pidstr, sizeof(pidstr), "%d\n", getpid());
+			snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
 			if (pidfd >= 0)
 				shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
 		}
diff --git a/src/mworker.c b/src/mworker.c
index 6a4f1f5..511d961 100644
--- a/src/mworker.c
+++ b/src/mworker.c
@@ -449,7 +449,7 @@
 
 	chunk_printf(&trash, "#%-14s %-15s %-15s %-15s %-15s %-15s\n", "<PID>", "<type>", "<relative PID>", "<reloads>", "<uptime>", "<version>");
 	memprintf(&uptime, "%dd%02dh%02dm%02ds", up / 86400, (up % 86400) / 3600, (up % 3600) / 60, (up % 60));
-	chunk_appendf(&trash, "%-15u %-15s %-15u %-15d %-15s %-15s\n", getpid(), "master", 0, proc_self->reloads, uptime, haproxy_version);
+	chunk_appendf(&trash, "%-15u %-15s %-15u %-15d %-15s %-15s\n", (unsigned int)getpid(), "master", 0, proc_self->reloads, uptime, haproxy_version);
 	free(uptime);
 	uptime = NULL;