diff --git a/code/replot_security.py b/code/replot_security.py
index 96c567c..4e67e45 100644
--- a/code/replot_security.py
+++ b/code/replot_security.py
@@ -276,8 +276,10 @@ def fig_snr():
     ax.semilogy(x, col(r, "eve_public"), color=C_PUB, marker="v",
                 ls="none", markevery=(2, 3), markerfacecolor="none",
                 label=LBL["eve_pub"])
+    # this figure carries two eavesdroppers, so the bare label of the
+    # key-length figure would not tell them apart
     ax.semilogy(x, col(r, "eve_wrong"), color=C_EVE, marker="s", ls="--",
-                label=LBL["eve_key"])
+                label="Eavesdropper, keyed")
     # the chance level lies within 3.5e-4 of the wrong-key curve, so it is
     # drawn for reference but left out of the legend, which the caption
     # names instead; five long entries leave this figure no clear corner
diff --git a/fig/fig_sec_brute.pdf b/fig/fig_sec_brute.pdf
index e90c32c..487e1b9 100644
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diff --git a/fig/fig_sec_jam.pdf b/fig/fig_sec_jam.pdf
index 868ea16..fd75039 100644
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diff --git a/fig/fig_sec_keylen.pdf b/fig/fig_sec_keylen.pdf
index fa6e8c3..81017ed 100644
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diff --git a/fig/fig_sec_kpa.pdf b/fig/fig_sec_kpa.pdf
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diff --git a/fig/fig_sec_real.pdf b/fig/fig_sec_real.pdf
index 63eaaf3..78698f4 100644
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diff --git a/fig/fig_sec_sens.pdf b/fig/fig_sec_sens.pdf
index ac24859..1457ea2 100644
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diff --git a/fig/fig_sec_snr.pdf b/fig/fig_sec_snr.pdf
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