Index: uspace/lib/c/arch/amd64/include/libarch/tls.h
===================================================================
--- uspace/lib/c/arch/amd64/include/libarch/tls.h	(revision 7c3fb9bd77e4d2f6c10517a052e567f176fa91ee)
+++ uspace/lib/c/arch/amd64/include/libarch/tls.h	(revision 21a7ebc3e91c07ae4c90a09940add413118afd2c)
@@ -55,5 +55,5 @@
 
 	asm volatile ("movq %%fs:0, %0" : "=r" (retval));
-	return retval;
+	return (tcb_t *)retval;
 }