diff --git a/simple.make b/simple.make
index 21281185..9b20d032 100644
--- a/simple.make
+++ b/simple.make
@@ -183,6 +183,7 @@ M2_PLANET_SOURCES =						\
 	    -e 's@^(#include.*)@/* \1 */@'		\
 	    $<						\
 	| $(CC) -E -I include				\
+	    -D POINTER_CELLS=1				\
 	    -D __M2_PLANET__=1				\
 	    -D 'MES_VERSION="git"'			\
 	    -D 'MES_PKGDATADIR="/usr/local/share/mes"'	\
@@ -208,6 +209,7 @@ M2_PLANET_SOURCES =						\
 	    -e 's@^(#include.*)@/* \1 */@'		\
 	    $<						\
 	| $(CC) -E -I include				\
+	    -D POINTER_CELLS=1				\
 	    -D __M2_PLANET__=1				\
 	    -D 'MES_VERSION="git"'			\
 	    -D 'MES_PKGDATADIR="/usr/local/share/mes"'	\