diff --git a/mex_generate_coarsegrid.m b/mex_generate_coarsegrid.m
index 4d3d1bbe..895cc22b 100644
--- a/mex_generate_coarsegrid.m
+++ b/mex_generate_coarsegrid.m
@@ -38,7 +38,7 @@ function varargout = mex_generate_coarsegrid(varargin)
    ...
         -O -largeArrayDims ...
    ...
-        mex_generate_coarsegrid.c coarse_conn.c mrst_abi.c
+        mex_generate_coarsegrid.c coarse_conn.c mrst_api.c
 
    % Call MEX'ed edition.
    [varargout{1:nargout}] = mex_generate_coarsegrid(varargin{:});