diff --git a/docs/source/bmi.var_funcs.md b/docs/source/bmi.var_funcs.md
index c283b71..198a3c7 100644
--- a/docs/source/bmi.var_funcs.md
+++ b/docs/source/bmi.var_funcs.md
@@ -55,7 +55,6 @@ A model can have one or more grids.
 
 **Implementation notes**
 
-- Grid identifiers start at 0.
 - In C++, Java, and Python, the *grid* argument is omitted and the grid
   identifier is returned from the function.
 - In C and Fortran, an integer status code indicating success (zero) or