diff --git a/Runtime-Environments.md b/Runtime-Environments.md
index 68eec00..c3eeea7 100644
--- a/Runtime-Environments.md
+++ b/Runtime-Environments.md
@@ -30,7 +30,7 @@ In C# language there are none of the handy functions to operate with textual inp
 
 ## Data-only
 
-Data-only environment expects the students to submit only data files (i.e., anything). The exercise provides judge which in fact takes the place of tested solution and performs the verification of the data. The judge must be always present and it has very similar interface of the custom judges in other environments. The only difference is that the judge does not receive a name of the tested file on the command line (since may files may have been submitted). Therefore, it gets only custom arguments (from the exercise configuration) on the command line and it must find the files on its own (both submitted and extra files are loaded to current working directory when the judge is executed).
+Data-only environment expects the students to submit only data files (i.e., anything). The exercise provides judge which in fact takes the place of tested solution and performs the verification of the data. The judge must be always present and it has very similar interface of the custom judges in other environments. The only difference is that the judge does not receive a name of the tested file on the command line (since many files may have been submitted). Therefore, it gets only custom arguments (from the exercise configuration) on the command line and it must find the files on its own (both submitted and extra files are loaded to current working directory when the judge is executed).
 
 
 ## Go