diff --git a/doc/colvars-refman-main.tex b/doc/colvars-refman-main.tex
index 5f41e9a84..5ceb4dabb 100644
--- a/doc/colvars-refman-main.tex
+++ b/doc/colvars-refman-main.tex
@@ -3765,7 +3765,7 @@
 \item %
   \labelkey{colvar|mapTotal|atomWeights}
   \keydef
-    {atoms}{%
+    {atomWeights}{%
     \texttt{mapTotal}}{%
     Weights to assign to each atom}{%
     list of space-separated decimals}{%