diff --git a/src/platform/perf-main.c b/src/platform/perf-main.c
index b7ccdf477..846540098 100644
--- a/src/platform/perf-main.c
+++ b/src/platform/perf-main.c
@@ -149,6 +149,7 @@ static void _GBAPerfShutdown(int signal) {
 
 static bool _parsePerfOpts(struct SubParser* parser, int option, const char* arg) {
 	struct PerfOpts* opts = parser->opts;
+	errno = 0;
 	switch (option) {
 	case 'F':
 		opts->frames = strtoul(arg, 0, 10);