diff --git a/Packages/Arrangement/bench/Arrangement/Makefile.mak b/Packages/Arrangement/bench/Arrangement/Makefile.mak
index 34dc0ef3091..a2f6418cafe 100644
--- a/Packages/Arrangement/bench/Arrangement/Makefile.mak
+++ b/Packages/Arrangement/bench/Arrangement/Makefile.mak
@@ -21,6 +21,7 @@ endif
 endif
 
 LCPPINCS = -I$(BASEDIR)/../../include
+LCPPINCS+= -I$(BASEDIR)/../../../Bench/include
 LCPPINCS+= -I$(BASEDIR)/../../../Planar_map/include
 LCPPINCS+= -I$(BASEDIR)/../../../Trapezoidal_decomposition/include
 LCPPINCS+= -I$(BASEDIR)/../../../../src/LEDA_KERNEL/include
diff --git a/Packages/Planar_map/bench/Planar_map/Makefile.mak b/Packages/Planar_map/bench/Planar_map/Makefile.mak
index b8887581ed0..e47bbefcbc6 100644
--- a/Packages/Planar_map/bench/Planar_map/Makefile.mak
+++ b/Packages/Planar_map/bench/Planar_map/Makefile.mak
@@ -21,6 +21,7 @@ endif
 endif
 
 LCPPINCS = -I$(BASEDIR)/../../include
+LCPPINCS+= -I$(BASEDIR)/../../../Bench/include
 LCPPINCS+= -I$(BASEDIR)/../../../Arrangement/include
 LCPPINCS+= -I$(BASEDIR)/../../../Trapezoidal_decomposition/include
 LCPPINCS+= -I$(BASEDIR)/../../../../src/LEDA_KERNEL/include