diff --git a/src/include/ngspice.h b/src/include/ngspice.h
index a2d1e381e..e443e2a94 100644
--- a/src/include/ngspice.h
+++ b/src/include/ngspice.h
@@ -15,7 +15,7 @@
  */
 #define _GNU_SOURCE
 
-#include <config.h>
+#include "config.h"
 #include <stddef.h>
 
 #ifdef HAVE_LIMITS_H