diff --git a/libc/arch-x86/string/bcmp.S b/libc/arch-x86/string/bcmp.S
index a5b46ae..4a88f66 100644
--- a/libc/arch-x86/string/bcmp.S
+++ b/libc/arch-x86/string/bcmp.S
@@ -30,3 +30,4 @@
 L2:	popl	%esi
 	popl	%edi
 	ret
+END(bcmp)
diff --git a/libc/arch-x86/string/bzero.S b/libc/arch-x86/string/bzero.S
index 2ec9c7d..c73a351 100644
--- a/libc/arch-x86/string/bzero.S
+++ b/libc/arch-x86/string/bzero.S
@@ -41,3 +41,4 @@
 
 	popl	%edi
 	ret
+END(bzero)
diff --git a/libc/arch-x86/string/fss.S b/libc/arch-x86/string/fss.S
index 96affab..d819306 100644
--- a/libc/arch-x86/string/fss.S
+++ b/libc/arch-x86/string/fss.S
@@ -15,3 +15,4 @@
 	.align 2
 L1:	xorl	%eax,%eax		/* clear result */
 	ret
+END(ffs)
diff --git a/libc/arch-x86/string/memchr.S b/libc/arch-x86/string/memchr.S
index d6bcbe6..367c7b4 100644
--- a/libc/arch-x86/string/memchr.S
+++ b/libc/arch-x86/string/memchr.S
@@ -24,3 +24,4 @@
 L1:	xorl	%eax,%eax
 	popl	%edi
 	ret
+END(memchr)
diff --git a/libc/arch-x86/string/memcmp.S b/libc/arch-x86/string/memcmp.S
index 1be189a..3b50530 100644
--- a/libc/arch-x86/string/memcmp.S
+++ b/libc/arch-x86/string/memcmp.S
@@ -41,3 +41,4 @@
 	popl	%esi
 	popl	%edi
 	ret
+END(memcmp)
diff --git a/libc/arch-x86/string/memset.S b/libc/arch-x86/string/memset.S
index 1059ccc..62e6a17 100644
--- a/libc/arch-x86/string/memset.S
+++ b/libc/arch-x86/string/memset.S
@@ -53,3 +53,4 @@
 	popl	%ebx
 	popl	%edi
 	ret
+END(memset)
diff --git a/libc/arch-x86/string/strcat.S b/libc/arch-x86/string/strcat.S
index 60fdd55..c75f38a 100644
--- a/libc/arch-x86/string/strcat.S
+++ b/libc/arch-x86/string/strcat.S
@@ -71,3 +71,4 @@
 L2:	popl	%eax			/* pop destination address */
 	popl	%edi			/* restore edi */
 	ret
+END(strcat)
diff --git a/libc/arch-x86/string/strcmp.S b/libc/arch-x86/string/strcmp.S
index 22ba546..5d3f4fc 100644
--- a/libc/arch-x86/string/strcmp.S
+++ b/libc/arch-x86/string/strcmp.S
@@ -79,3 +79,4 @@
 	movzbl	(%edx),%edx
 	subl	%edx,%eax
 	ret
+END(strcmp)
diff --git a/libc/arch-x86/string/strcpy.S b/libc/arch-x86/string/strcpy.S
index 341eb6c..7d9b87e 100644
--- a/libc/arch-x86/string/strcpy.S
+++ b/libc/arch-x86/string/strcpy.S
@@ -61,3 +61,4 @@
 	jnz	L1
 L2:	popl	%eax			/* pop dst address */
 	ret
+END(strcpy)
diff --git a/libc/arch-x86/string/strlen.S b/libc/arch-x86/string/strlen.S
index 4f04ffc..527e36a 100644
--- a/libc/arch-x86/string/strlen.S
+++ b/libc/arch-x86/string/strlen.S
@@ -18,3 +18,4 @@
 	leal	-1(%ecx),%eax		/* and subtracting one */
 	popl	%edi
 	ret
+END(strlen)
diff --git a/libc/arch-x86/string/strncmp.S b/libc/arch-x86/string/strncmp.S
index 5aa88d7..6649473 100644
--- a/libc/arch-x86/string/strncmp.S
+++ b/libc/arch-x86/string/strncmp.S
@@ -111,3 +111,4 @@
 L4:	xorl	%eax,%eax
 	popl	%ebx
 	ret
+END(strncmp)
diff --git a/libc/arch-x86/string/swab.S b/libc/arch-x86/string/swab.S
index 3055860..2f6cfb2 100644
--- a/libc/arch-x86/string/swab.S
+++ b/libc/arch-x86/string/swab.S
@@ -65,3 +65,4 @@
 L4:	popl	%edi
 	popl	%esi
 	ret
+END(swab)