--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1791,13 +1791,13 @@ install(PROGRAMS ${CMAKE_SAMPLES_OUTPUT_DIRECTORY}/rexxcps.rex COMPONENT Samples
 
 if (NOT WIN32)
    macro (add_manpage name cat)
-      add_custom_command(OUTPUT ${name}.${cat}.gz
-              COMMAND gzip -c
+      add_custom_command(OUTPUT ${name}.${cat}
+              COMMAND cp
               ${CMAKE_CURRENT_SOURCE_DIR}/${build_platform_dir}/${name}.${cat}
-              > ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${name}.${cat}.gz
+              ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${name}.${cat}
               DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${build_platform_dir}/${name}.${cat})
-      add_custom_target(${name}_man ALL DEPENDS ${name}.${cat}.gz)
-      install(FILES ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${name}.${cat}.gz
+      add_custom_target(${name}_man ALL DEPENDS ${name}.${cat})
+      install(FILES ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${name}.${cat}
           DESTINATION ${INSTALL_MAN_DIR}/man${cat}
           PERMISSIONS OWNER_READ GROUP_READ WORLD_READ OWNER_WRITE)
    endmacro (add_manpage)