diff --git a/hermit/usr/libgomp/config.h b/hermit/usr/libgomp/config.h
index 340145417..a15def0d8 100644
--- a/hermit/usr/libgomp/config.h
+++ b/hermit/usr/libgomp/config.h
@@ -81,7 +81,7 @@
 #define HAVE_SYS_TYPES_H 1
 
 /* Define to 1 if the target supports thread-local storage. */
-#undef HAVE_TLS
+#define HAVE_TLS	1
 
 /* Define to 1 if you have the <unistd.h> header file. */
 #define HAVE_UNISTD_H 1