diff --git a/test/ios/test_support.mm b/test/ios/test_support.mm
index bb8532b680..d3c9ee0c74 100644
--- a/test/ios/test_support.mm
+++ b/test/ios/test_support.mm
@@ -113,7 +113,7 @@ static absl::optional<std::vector<std::string>> g_metrics_to_plot;
       }
     }
     if (!g_webrtc_test_metrics_output_path.empty()) {
-      RTC_CHECK_NE(g_webrtc_test_metrics_output_path.find('/'), std::string::npos)
+      RTC_CHECK_EQ(g_webrtc_test_metrics_output_path.find('/'), std::string::npos)
           << "On iOS, --webrtc_test_metrics_output_path must only be a file name.";
       if ([outputDirectories count] != 0) {
         NSString *fileName = [NSString stringWithCString:g_webrtc_test_metrics_output_path.c_str()