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-rw-r--r--src/indexamajig.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/indexamajig.c b/src/indexamajig.c
index ee173c6a..54ae0a5c 100644
--- a/src/indexamajig.c
+++ b/src/indexamajig.c
@@ -111,7 +111,7 @@ static void show_help(const char *s)
" --no-sat-corr Don't correct values of saturated peaks using a\n"
" table included in the HDF5 file.\n"
" --threshold=<n> Only accept peaks above <n> ADU. Default: 800.\n"
-" --min-gradient=<n> Minimum gradient for Zaefferer peak search.\n"
+" --min-gradient=<n> Minimum squared gradient for Zaefferer peak search.\n"
" Default: 100,000.\n"
" --min-snr=<n> Minimum signal-to-noise ratio for peaks.\n"
" Default: 5.\n"