diff --git a/Core/Geometry/Transform.cc b/Core/Geometry/Transform.cc
index 4f16fdc..0da4679 100644
--- a/Core/Geometry/Transform.cc
+++ b/Core/Geometry/Transform.cc
@@ -28,6 +28,7 @@
 
 #include <cassert>
 #include <cstring>
+#include <cstdio>
 
 #include <Core/Util/TypeDescription.h>
 #include <Core/Geometry/Transform.h>
diff --git a/Core/Util/FullFileName.cc b/Core/Util/FullFileName.cc
index 7a2cad7..7710e92 100644
--- a/Core/Util/FullFileName.cc
+++ b/Core/Util/FullFileName.cc
@@ -29,6 +29,7 @@
 
 #include <Core/Util/FullFileName.h>
 #include <iostream>
+#include <cstdio>
 
 namespace SCIRun {
 
diff --git a/Externals/particle-system-mm/src/sizingfield/LFS.cxx b/Externals/particle-system-mm/src/sizingfield/LFS.cxx
index d1fa5aa..a5a4358 100644
--- a/Externals/particle-system-mm/src/sizingfield/LFS.cxx
+++ b/Externals/particle-system-mm/src/sizingfield/LFS.cxx
@@ -1,5 +1,6 @@
 #include <cstdlib>
 #include <iostream>
+#include <cstdio>
 #include <LFS.h>
 
 using namespace std;
diff --git a/Externals/slivr/Point.cc b/Externals/slivr/Point.cc
index d3be03e..ed4e503 100644
--- a/Externals/slivr/Point.cc
+++ b/Externals/slivr/Point.cc
@@ -42,6 +42,7 @@
 #include <slivr/Point.h>
 #include <slivr/Vector.h>
 #include <iostream>
+#include <cstdio>
 
 namespace SLIVR {
 
diff --git a/Externals/slivr/Transform.cc b/Externals/slivr/Transform.cc
index c0a4430..520179f 100644
--- a/Externals/slivr/Transform.cc
+++ b/Externals/slivr/Transform.cc
@@ -47,6 +47,7 @@
 #include <math.h>
 #include <string.h>
 #include <iostream>
+#include <cstdio>
 
 using namespace SLIVR;
 using namespace std;
diff --git a/Externals/slivr/Vector.cc b/Externals/slivr/Vector.cc
index 8370d65..8b04bb9 100644
--- a/Externals/slivr/Vector.cc
+++ b/Externals/slivr/Vector.cc
@@ -43,6 +43,7 @@
 #include <slivr/Point.h>
 #include <assert.h>
 #include <iostream>
+#include <cstdio>
 
 using std::istream;
 using std::ostream;
diff --git a/Externals/vispack/src/image/imagefile.txx b/Externals/vispack/src/image/imagefile.txx
index ced2590..13a32b2 100644
--- a/Externals/vispack/src/image/imagefile.txx
+++ b/Externals/vispack/src/image/imagefile.txx
@@ -1,3 +1,5 @@
+#include <cstdio>
+
 template <class T>
 int write_raw(const char* name, const VISImage<T>& im)
 {
