diff --git a/MasterPassword/iOS/MPMainViewController.m b/MasterPassword/iOS/MPMainViewController.m
index f7780166..93576aa5 100644
--- a/MasterPassword/iOS/MPMainViewController.m
+++ b/MasterPassword/iOS/MPMainViewController.m
@@ -221,14 +221,17 @@
          [NSURLRequest requestWithURL:
           [NSURL URLWithString:[NSString stringWithFormat:@"#%@", chapter] relativeToURL:
            [[NSBundle mainBundle] URLForResource:@"help" withExtension:@"html"]]]];
-        
-        NSString *error = [self.helpView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"setClass('%@');",
-                                                                                 ClassNameFromMPElementType(self.activeElement.type)]];
-        if (error.length)
-            err(@"setClass: %@", error);
     });
 }
 
+- (void)webViewDidFinishLoad:(UIWebView *)webView {
+    
+    NSString *error = [self.helpView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"setClass('%@');",
+                                                                             ClassNameFromMPElementType(self.activeElement.type)]];
+    if (error.length)
+        err(@"helpView.setClass: %@", error);
+}
+
 - (void)showContentTip:(NSString *)message withIcon:(UIImageView *)icon {
     
     dispatch_async(dispatch_get_main_queue(), ^{