diff --git a/Inst_eddies/CMakeLists.txt b/Inst_eddies/CMakeLists.txt
index b1699fe80eb78d3a6bb4cdf2879b647a4367ff95..41ab87996cf2fa2fb79d0969bbe1effcd01757b2 100644
--- a/Inst_eddies/CMakeLists.txt
+++ b/Inst_eddies/CMakeLists.txt
@@ -15,6 +15,6 @@ target_link_libraries(inst_eddies PRIVATE Contour_531::contour_531
   Numer_Rec_95::numer_rec_95 NR_util::nr_util Jumble::jumble
   NetCDF_Fortran::netcdff)
 
-configure_file(inst_eddies_in.py inst_eddies.py @ONLY)
+configure_file(inst_eddies.py.in inst_eddies.py @ONLY)
 execute_process(COMMAND chmod -w ${CMAKE_CURRENT_BINARY_DIR}/inst_eddies.py)
 include(Tests/CMakeLists.txt)
diff --git a/Inst_eddies/inst_eddies_in.py b/Inst_eddies/inst_eddies.py.in
similarity index 100%
rename from Inst_eddies/inst_eddies_in.py
rename to Inst_eddies/inst_eddies.py.in