diff --git a/man/prb.Rd b/man/prb.Rd
index 1579d38..1dbe5f7 100644
--- a/man/prb.Rd
+++ b/man/prb.Rd
@@ -31,7 +31,7 @@ against IAAO/Quintos standards.}
 }
 \description{
 PRB is an index of vertical equity that quantifies the
-  relationship betweem ratios and assessed values as a percentage. In
+  relationship between ratios and assessed values as a percentage. In
   concrete terms, a PRB of 0.02 indicates that, on average, ratios increase
   by 2\% whenever assessed values increase by 100 percent.