diff --git a/scripts/CMakeLists.txt b/scripts/CMakeLists.txt
index 8c98fbe060..1f93ddc81d 100644
--- a/scripts/CMakeLists.txt
+++ b/scripts/CMakeLists.txt
@@ -29,7 +29,7 @@ if(CURL_COMPLETION_FISH OR
    CURL_COMPLETION_ZSH)
   if(PERL_FOUND)
     if(CURL_COMPLETION_FISH)
-      set(_completion_fish "curl.fish")
+      set(_completion_fish "${CMAKE_CURRENT_BINARY_DIR}/curl.fish")
       add_custom_command(OUTPUT "${_completion_fish}"
         COMMAND "${PERL_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/completion.pl"
           --opts-dir "${PROJECT_SOURCE_DIR}/docs/cmdline-opts" --shell fish > "${_completion_fish}"
@@ -40,7 +40,7 @@ if(CURL_COMPLETION_FISH OR
     endif()
 
     if(CURL_COMPLETION_ZSH)
-      set(_completion_zsh "_curl")
+      set(_completion_zsh "${CMAKE_CURRENT_BINARY_DIR}/_curl")
       add_custom_command(OUTPUT "${_completion_zsh}"
         COMMAND "${PERL_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/completion.pl"
           --opts-dir "${PROJECT_SOURCE_DIR}/docs/cmdline-opts" --shell zsh > "${_completion_zsh}"
@@ -69,12 +69,10 @@ if(CURL_COMPLETION_FISH OR
           endif()
         endif()
         if(CURL_COMPLETION_FISH_DIR)
-          install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${_completion_fish}"
-                  DESTINATION "${CURL_COMPLETION_FISH_DIR}")
+          install(FILES "${_completion_fish}" DESTINATION "${CURL_COMPLETION_FISH_DIR}")
         endif()
         if(CURL_COMPLETION_ZSH_DIR)
-          install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${_completion_zsh}"
-                  DESTINATION "${CURL_COMPLETION_ZSH_DIR}")
+          install(FILES "${_completion_zsh}" DESTINATION "${CURL_COMPLETION_ZSH_DIR}")
         endif()
       else()
         message(STATUS "We cannot install completion scripts when cross-compiling")