diff --git a/README.md b/README.md
index 3ce1d10..a401975 100644
--- a/README.md
+++ b/README.md
@@ -56,12 +56,12 @@ Some options require the TPM to be in a specific state. This state is shown in b
 To get the TPM into the required state, call ELTT2 with the corresponding commands ("x" for a state means that whether this state is required or not depends on the actual command or the command parameters sent eventually to the TPM).
 
 
-| Command line option: | Explanation:                   | Precondition:
-| ------------         | ------------                   | ------------- |
-| -a \<data bytes\>    | Hash Sequence SHA-1            | \[u\] |
-| -A \<data bytes\>    | Hash Sequence SHA-256          | \[u\] |
-| -b \<command bytes\> | Enter your own TPM command     | \[u\] |
-| -c                   | Read Clock                     | \[u\] |
+| Command line option  | Explanation                    | Precondition
+| ---                  | ---                            | ---
+| -a \<data bytes\>    | Hash Sequence SHA-1            | \[u\] 
+| -A \<data bytes\>    | Hash Sequence SHA-256          | \[u\] 
+| -b \<command bytes\> | Enter your own TPM command     | \[u\] 
+| -c                   | Read Clock                     | \[u\] 
 
 # abc