diff --git a/tcg/s390/tcg-target.c b/tcg/s390/tcg-target.c
index be51c8b..2091beb 100644
--- a/tcg/s390/tcg-target.c
+++ b/tcg/s390/tcg-target.c
@@ -51,7 +51,7 @@
 /* A scratch register that may be be used throughout the backend.  */
 #define TCG_TMP0        TCG_REG_R14
 
-#ifdef CONFIG_USE_GUEST_BASE
+#ifndef CONFIG_SOFTMMU
 #define TCG_GUEST_BASE_REG TCG_REG_R13
 #else
 #define TCG_GUEST_BASE_REG TCG_REG_R0