diff --git a/React/CoreModules/RCTRedBox.mm b/React/CoreModules/RCTRedBox.mm
index 8cb294137ca644..c349c4e2a18750 100644
--- a/React/CoreModules/RCTRedBox.mm
+++ b/React/CoreModules/RCTRedBox.mm
@@ -328,7 +328,13 @@ - (UITableViewCell *)reuseCell:(UITableViewCell *)cell forErrorMessage:(NSString
     cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"msg-cell"];
     cell.textLabel.accessibilityIdentifier = @"redbox-error";
     cell.textLabel.textColor = [UIColor whiteColor];
-    cell.textLabel.font = [UIFont boldSystemFontOfSize:16];
+    if (@available(iOS 13.0, *)) {
+      // Prefer a monofont for formatting messages that were designed
+      // to be displayed in a terminal.
+      cell.textLabel.font = [UIFont monospacedSystemFontOfSize:14 weight:UIFontWeightBold];
+    } else {
+      cell.textLabel.font = [UIFont boldSystemFontOfSize:14];
+    }
     cell.textLabel.lineBreakMode = NSLineBreakByWordWrapping;
     cell.textLabel.numberOfLines = 0;
     cell.detailTextLabel.textColor = [UIColor whiteColor];