diff --git a/crypto/bn/CMakeLists.txt b/crypto/bn/CMakeLists.txt
index 25663afd..4a33f7e5 100644
--- a/crypto/bn/CMakeLists.txt
+++ b/crypto/bn/CMakeLists.txt
@@ -4,7 +4,6 @@ if (${ARCH} STREQUAL "x86_64")
   set(
     BN_ARCH_SOURCES
 
-    asm/x86_64-gcc.c
     x86_64-mont.${ASM_EXT}
     x86_64-mont5.${ASM_EXT}
     rsaz-x86_64.${ASM_EXT}
@@ -38,6 +37,7 @@ add_library(
   OBJECT
 
   add.c
+  asm/x86_64-gcc.c
   bn.c
   cmp.c
   convert.c