diff --git a/letter.tex b/letter.tex
index cbb88b8..e12a4a4 100644
--- a/letter.tex
+++ b/letter.tex
@@ -743,7 +743,7 @@ The gain varies significantly
 with the SNR (which is to be expected, since with higher SNR values the number
 of bit errors decreases, making the correction of those errors in the
 ``ML-in-the-list'' step more likely).
-For an FER of $10^{-6}$ the gain is approximately $\SI{1}{dB}$.
+For an FER of $10^{-6}$, the gain is approximately $\SI{1}{dB}$.
 Similar behavior can be observed with various other codes.
 No immediate relationship between the code length and the gain was observed
 during our examinations.
@@ -758,7 +758,7 @@ from only a few components of the estimate being wrong.
 These few erroneous components can mostly be corrected by appending an
 additional step to the original algorithm that is only executed if the
 algorithm has not converged.
-A gain of up to $\sim\SI{1}{dB}$ can be observed, depending on the code,
+A gain of up to $\SI{1}{dB}$ can be observed, depending on the code,
 the parameters considered, and the SNR.
 
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