diff --git a/lib/builtins/i386/chkstk.S b/lib/builtins/i386/chkstk.S
index b59974868..f6990c2f7 100644
--- a/lib/builtins/i386/chkstk.S
+++ b/lib/builtins/i386/chkstk.S
@@ -32,3 +32,5 @@ DEFINE_COMPILERRT_FUNCTION(__chkstk_ms)
 END_COMPILERRT_FUNCTION(__chkstk_ms)
 
 #endif // __i386__
+
+NO_EXEC_STACK_DIRECTIVE
diff --git a/lib/builtins/i386/chkstk2.S b/lib/builtins/i386/chkstk2.S
index 7d65bb088..b27a7891d 100644
--- a/lib/builtins/i386/chkstk2.S
+++ b/lib/builtins/i386/chkstk2.S
@@ -38,3 +38,5 @@ END_COMPILERRT_FUNCTION(__chkstk)
 END_COMPILERRT_FUNCTION(_alloca)
 
 #endif // __i386__
+
+NO_EXEC_STACK_DIRECTIVE
diff --git a/lib/builtins/x86_64/chkstk.S b/lib/builtins/x86_64/chkstk.S
index 4149ac63d..300716070 100644
--- a/lib/builtins/x86_64/chkstk.S
+++ b/lib/builtins/x86_64/chkstk.S
@@ -37,3 +37,5 @@ DEFINE_COMPILERRT_FUNCTION(___chkstk_ms)
 END_COMPILERRT_FUNCTION(___chkstk_ms)
 
 #endif // __x86_64__
+
+NO_EXEC_STACK_DIRECTIVE
diff --git a/lib/builtins/x86_64/chkstk2.S b/lib/builtins/x86_64/chkstk2.S
index ac1eb920e..b2b1e2289 100644
--- a/lib/builtins/x86_64/chkstk2.S
+++ b/lib/builtins/x86_64/chkstk2.S
@@ -40,3 +40,5 @@ END_COMPILERRT_FUNCTION(___chkstk)
 END_COMPILERRT_FUNCTION(__alloca)
 
 #endif // __x86_64__
+
+NO_EXEC_STACK_DIRECTIVE