diff --git a/Modules/FortranCInterface/Detect.cmake b/Modules/FortranCInterface/Detect.cmake
index 9e5726b03a..4d3cb005a7 100644
--- a/Modules/FortranCInterface/Detect.cmake
+++ b/Modules/FortranCInterface/Detect.cmake
@@ -8,11 +8,10 @@ configure_file(${FortranCInterface_SOURCE_DIR}/Input.cmake.in
 # configuration changes.
 if(NOT EXISTS ${FortranCInterface_BINARY_DIR}/Output.cmake
     OR NOT EXISTS ${FortranCInterface_BINARY_DIR}/Input.cmake
-    OR NOT EXISTS ${FortranCInterface_BINARY_DIR}/Output.cmake.in
     OR NOT ${FortranCInterface_BINARY_DIR}/Output.cmake
       IS_NEWER_THAN ${FortranCInterface_BINARY_DIR}/Input.cmake
     OR NOT ${FortranCInterface_SOURCE_DIR}/Output.cmake
-      IS_NEWER_THAN ${FortranCInterface_BINARY_DIR}/Output.cmake.in
+      IS_NEWER_THAN ${FortranCInterface_SOURCE_DIR}/Output.cmake.in
     OR NOT ${FortranCInterface_BINARY_DIR}/Output.cmake
       IS_NEWER_THAN ${FortranCInterface_SOURCE_DIR}/CMakeLists.txt
     OR NOT ${FortranCInterface_BINARY_DIR}/Output.cmake