diff --git a/zobov/voz1b1.c b/zobov/voz1b1.c
index ebc7f0b..aa04d69 100644
--- a/zobov/voz1b1.c
+++ b/zobov/voz1b1.c
@@ -1,4 +1,4 @@
-#include "qhull_a.h"
+#include "libqhull/qhull_a.h"
 #include "voz.h"
 
 #define DL for (d=0;d<3;d++)
diff --git a/zobov/vozinit.c b/zobov/vozinit.c
index 0995e33..09151fd 100644
--- a/zobov/vozinit.c
+++ b/zobov/vozinit.c
@@ -1,4 +1,4 @@
-#include "qhull_a.h"
+#include "libqhull/qhull_a.h"
 #include "voz.h"
 
 #define NUMCPU 2
diff --git a/zobov/vozutil.c b/zobov/vozutil.c
index ed60125..6b9e3b6 100644
--- a/zobov/vozutil.c
+++ b/zobov/vozutil.c
@@ -1,4 +1,4 @@
-#include "qhull_a.h"
+#include "libqhull/qhull_a.h"
 #include "voz.h"
 
 #define FOREACHvertex2_(vertices) FOREACHsetelement_(vertexT, vertices2,vertex2)