diff --git a/CMakeLists.txt b/CMakeLists.txt
index 17e471e..e31bf08 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION "3.14")
 
-project(EQUILIBRATE LANGUAGES Fortran C VERSION "0.1.2")
+project(EQUILIBRATE LANGUAGES Fortran C VERSION "0.1.3")
 
 set(CMAKE_Fortran_MODULE_DIRECTORY "${CMAKE_BINARY_DIR}/modules")
 include(cmake/CPM.cmake)
diff --git a/src/equilibrate.f90 b/src/equilibrate.f90
index 5238e78..fe9bc54 100644
--- a/src/equilibrate.f90
+++ b/src/equilibrate.f90
@@ -317,7 +317,7 @@ function solve_metallicity(self, P, T, metallicity, CtoO, err) result(converged)
     ! Compute atoms based on the input metallicity.
     molfracs_atoms = self%molfracs_atoms_sun
     do i = 1,size(molfracs_atoms)
-      if (self%atoms_names(i) /= 'H' .or. self%atoms_names(i) /= 'He') then
+      if (self%atoms_names(i) /= 'H' .and. self%atoms_names(i) /= 'He') then
         molfracs_atoms(i) = self%molfracs_atoms_sun(i)*metallicity
       endif
     enddo