diff --git a/src/util/virsystemd.c b/src/util/virsystemd.c
index 5b772e29dd..d46e5f74fc 100644
--- a/src/util/virsystemd.c
+++ b/src/util/virsystemd.c
@@ -56,7 +56,7 @@ struct _virSystemdActivationEntry {
 static void virSystemdEscapeName(virBuffer *buf,
                                  const char *name)
 {
-    static const char hextable[16] = "0123456789abcdef";
+    static const char hextable[] = "0123456789abcdef";
 
 #define ESCAPE(c) \
     do { \