diff --git a/freebsd/sys/cdefs.h b/freebsd/sys/cdefs.h
index daf1a4d6e..d185ba1c0 100644
--- a/freebsd/sys/cdefs.h
+++ b/freebsd/sys/cdefs.h
@@ -264,7 +264,7 @@
 #endif
 
 #if !defined(__cplusplus) && !__has_extension(c_atomic) && \
-	!__has_extension(cxx_atomic) && !__GNUC_PREREQ__(4, 7)
+	!__has_extension(cxx_atomic) && !__GNUC_PREREQ__(4, 9)
 /*
  * No native support for _Atomic(). Place object in structure to prevent
  * most forms of direct non-atomic access.
diff --git a/freebsd/sys/stdatomic.h b/freebsd/sys/stdatomic.h
index 614e03293..2b74da0f6 100644
--- a/freebsd/sys/stdatomic.h
+++ b/freebsd/sys/stdatomic.h
@@ -37,7 +37,7 @@
 
 #if defined(__clang__) && (__has_extension(c_atomic) || __has_extension(cxx_atomic))
 #define	__CLANG_ATOMICS
-#elif __GNUC_PREREQ__(4, 7)
+#elif __GNUC_PREREQ__(4, 9)
 #define	__GNUC_ATOMICS
 #elif defined(__GNUC__)
 #define	__SYNC_ATOMICS