diff --git a/Modules/CMakeASM_NASMInformation.cmake b/Modules/CMakeASM_NASMInformation.cmake
index 1e3c608456..cb793e7c21 100644
--- a/Modules/CMakeASM_NASMInformation.cmake
+++ b/Modules/CMakeASM_NASMInformation.cmake
@@ -28,7 +28,9 @@ if(NOT CMAKE_ASM_NASM_OBJECT_FORMAT)
   endif()
 endif()
 
-set(CMAKE_ASM_NASM_COMPILE_OBJECT "<CMAKE_ASM_NASM_COMPILER> <INCLUDES> <FLAGS> -f ${CMAKE_ASM_NASM_OBJECT_FORMAT} -o <OBJECT> <SOURCE>")
+if(NOT CMAKE_ASM_NASM_COMPILE_OBJECT)
+  set(CMAKE_ASM_NASM_COMPILE_OBJECT "<CMAKE_ASM_NASM_COMPILER> <INCLUDES> <FLAGS> -f ${CMAKE_ASM_NASM_OBJECT_FORMAT} -o <OBJECT> <SOURCE>")
+endif()
 
 # Load the generic ASMInformation file:
 set(ASM_DIALECT "_NASM")