diff --git a/lib/libspl/asm-x86_64/atomic.S b/lib/libspl/asm-x86_64/atomic.S
index 49c9b2ad15..50edfe878c 100644
--- a/lib/libspl/asm-x86_64/atomic.S
+++ b/lib/libspl/asm-x86_64/atomic.S
@@ -28,8 +28,12 @@
 	.file	"%M%"
 
 #define _ASM
+#ifdef __linux__
 #include <ia32/sys/asm_linkage.h>
-
+#elif __FreeBSD__
+#include <machine/asmacros.h>
+#define SET_SIZE(x)
+#endif
 	ENTRY(atomic_inc_8)
 	ALTENTRY(atomic_inc_uchar)
 	lock