diff --git a/visualc/src/include/ngspice/config.h b/visualc/src/include/ngspice/config.h
index 7150fba95..b89470676 100644
--- a/visualc/src/include/ngspice/config.h
+++ b/visualc/src/include/ngspice/config.h
@@ -459,6 +459,9 @@
 /* Client-Server via socket. */
 /* #undef IPC_UNIX_SOCKETS */
 
+/* Define if we want KLU linear systems solver */
+#define KLU /**/
+
 /* The NDEV interface */
 /* #undef NDEV */