diff --git a/ios/RNDeviceInfo/RNDeviceInfo.m b/ios/RNDeviceInfo/RNDeviceInfo.m
index a2b2d6082..9fcbea6e9 100644
--- a/ios/RNDeviceInfo/RNDeviceInfo.m
+++ b/ios/RNDeviceInfo/RNDeviceInfo.m
@@ -382,7 +382,10 @@ - (float) getFontScale {
     
     // Shared application is unavailable in an app extension.
     if (application) {
-        NSString *contentSize = application.preferredContentSizeCategory;
+        __block NSString *contentSize = nil;
+        RCTUnsafeExecuteOnMainQueueSync(^{
+            contentSize = application.preferredContentSizeCategory;
+        });
         
         if ([contentSize isEqual: @"UICTContentSizeCategoryXS"]) fontScale = 0.82;
         else if ([contentSize isEqual: @"UICTContentSizeCategoryS"]) fontScale = 0.88;