diff --git a/ecmastdlib/CMakeLists.txt b/ecmastdlib/CMakeLists.txt
index 7af7b5e39d2d46a443bff8ef08f32d2f77c6fc2f..a3c9d21d188a8c2b43c4149b9c08efa0e704af01 100644
--- a/ecmastdlib/CMakeLists.txt
+++ b/ecmastdlib/CMakeLists.txt
@@ -15,6 +15,8 @@ cmake_minimum_required(VERSION 3.10)
 
 project(ecmastdlib)
 
+add_panda_assembly(TARGET ecmastdlib SOURCE ecmastdlib.pa)
+
 if(CMAKE_CROSSCOMPILING)
     ExternalProject_Get_Property(panda_host_tools binary_dir)
     set(arkquick_target panda_host_tools)
@@ -24,13 +26,13 @@ else()
     set(arkquick_bin    $<TARGET_FILE:${arkquick_target}>)
 endif()
 
-add_panda_assembly(TARGET ecmastdlib SOURCE ecmastdlib.pa)
-
-add_custom_command(TARGET ecmastdlib
-                   POST_BUILD
-                   COMMAND ${arkquick_bin} "${CMAKE_CURRENT_BINARY_DIR}/ecmastdlib.abc" "${CMAKE_CURRENT_BINARY_DIR}/ecmastdlib.abcq"
-                   WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
-                   DEPENDS arkquick)
+if (PANDA_WITH_QUICKENER)
+    add_custom_command(TARGET ecmastdlib
+                       POST_BUILD
+                       COMMAND ${arkquick_bin} "${CMAKE_CURRENT_BINARY_DIR}/ecmastdlib.abc" "${CMAKE_CURRENT_BINARY_DIR}/ecmastdlib.abcq"
+                       WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+                       DEPENDS arkquick)
+endif()
 
 set(ECMASTDLIB_INLINE_GEN "${CMAKE_CURRENT_BINARY_DIR}/ecmastdlib_inline_gen.h")
 set(ECMASTDLIB_INLINE_GEN_RB "${CMAKE_CURRENT_SOURCE_DIR}/ecmastdlib_inline_gen.rb")