diff --git a/ChangeLog b/ChangeLog
index 726f30491..0ffec0d7f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-07-23  Robert Larice  <>
+ * src/ciderlib/oned/oneprint.c ,
+ * src/ciderlib/twod/twoprint.c :
+   use #include <inttypes.h> to platform independent print 'size_t' variables
+
 2011-07-23  Robert Larice
  * autogen.sh :
    update for --adms3
diff --git a/src/ciderlib/oned/oneprint.c b/src/ciderlib/oned/oneprint.c
index ad0eabd81..0cb309a87 100644
--- a/src/ciderlib/oned/oneprint.c
+++ b/src/ciderlib/oned/oneprint.c
@@ -16,6 +16,9 @@ $Id$
 #include "onedext.h"
 #include "oneddefs.h"
 
+#include <inttypes.h>
+
+
 void
 ONEprnSolution(FILE *file, ONEdevice *pDevice, OUTPcard *output)
 {
@@ -326,7 +329,7 @@ struct MatrixElement {
 void
 ONEmemStats(FILE *file, ONEdevice *pDevice)
 {
-  static const char memFormat[] = "%-20s%10d%10d\n";
+  const char memFormat[] = "%-20s" "%10d" "%10" PRIuPTR "\n";
 /*  static const char sumFormat[] = "%20s          %-10d\n";*/
   int size;
   size_t memory;
@@ -368,7 +371,7 @@ ONEmemStats(FILE *file, ONEdevice *pDevice)
   size = numContactNodes;
   memory += (size_t) size * sizeof(ONEnode *);
   size = 0;
-  fprintf(file, "%-20s%10s%10d\n", "Misc Mesh", "n/a", memory);
+  fprintf(file, "%-20s%10s%10" PRIuPTR "\n", "Misc Mesh", "n/a", memory);
 
   size = pDevice->numOrigEquil;
   memory = (size_t) size * sizeof(struct MatrixElement);
diff --git a/src/ciderlib/twod/twoprint.c b/src/ciderlib/twod/twoprint.c
index 4d1dc4952..c5f175d38 100644
--- a/src/ciderlib/twod/twoprint.c
+++ b/src/ciderlib/twod/twoprint.c
@@ -17,6 +17,9 @@ $Id$
 #include "twoddefs.h"
 #include "twodext.h"
 
+#include <inttypes.h>
+
+
 void
 TWOprnSolution(FILE *file, TWOdevice *pDevice, OUTPcard *output)
 {
@@ -344,7 +347,7 @@ struct  MatrixElement
 void
 TWOmemStats(FILE *file, TWOdevice *pDevice)
 {
-  static const char memFormat[] = "%-20s%10d%10d\n";
+  const char memFormat[] = "%-20s" "%10d" "%10" PRIuPTR "\n";
 /*  static const char sumFormat[] = "%20s          %-10d\n"; */
   int size;
   size_t memory;
@@ -395,7 +398,7 @@ TWOmemStats(FILE *file, TWOdevice *pDevice)
   for (pChannel = pDevice->pChannel; pChannel; pChannel = pChannel->next)
     size++;
   memory += (size_t) size * sizeof(TWOchannel);
-  fprintf(file, "%-20s%10s%10d\n", "Misc Mesh", "n/a", memory);
+  fprintf(file, "%-20s%10s%10" PRIuPTR "\n", "Misc Mesh", "n/a", memory);
 
   size = pDevice->numOrigEquil;
   memory = (size_t) size * sizeof(struct MatrixElement);