diff --git a/solution_architecture.md b/solution_architecture.md
index cc0463b..65f87a1 100644
--- a/solution_architecture.md
+++ b/solution_architecture.md
@@ -47,7 +47,7 @@ They only have to confirm to the app and the Exposure Notification Framework tha
 
 ### Retrieval of lab results and verification process
 
-Reporting positive tests to the app is crucial for others to get informed about a relevant exposure and potential infection. On the other hand, a verification before the uploaded of diagnosis keys is required in order to prevent misuse. 
+Reporting positive tests to the app is crucial for others to get informed about a relevant exposure and potential infection. However, a verification before the upload of any diagnosis keys is required in order to prevent misuse. 
 There are two ways for receiving this verification: 
 1. Use of the integrated functionality of the Corona-Warn-App to retrieve the results of a SARS-CoV-2 test from a verification server (see Figure 2, Step 4a). Through this integration, the positive test result is already verified and the diagnosis keys can be uploaded right after users have given their consent. 
 2. Use of a human-readable token (e.g. a number or a combination of words) and provide this as verification to the app. This token is called teleTAN (see Figure 2, Step 4b).