diff --git a/src/H5Block.c b/src/H5Block.c
index c17085f..7f23886 100644
--- a/src/H5Block.c
+++ b/src/H5Block.c
@@ -41,6 +41,7 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <stdarg.h>
 
 #include <hdf5.h>
 
diff --git a/src/H5Fed.c b/src/H5Fed.c
index f214061..f0c4918 100644
--- a/src/H5Fed.c
+++ b/src/H5Fed.c
@@ -35,6 +35,7 @@
   \defgroup h5fed_c_api H5Fed C API
 */
 
+#include <stdarg.h>
 #include <hdf5.h>
 #include "h5/h5.h"
 #include "h5/h5_private.h"
diff --git a/src/H5Fed_storeretrieve.c b/src/H5Fed_storeretrieve.c
index f96c06e..e0cca59 100644
--- a/src/H5Fed_storeretrieve.c
+++ b/src/H5Fed_storeretrieve.c
@@ -15,6 +15,7 @@
  */
 
 #include <hdf5.h>
+#include <stdarg.h>
 #include "h5/h5.h"
 #include "h5/h5_private.h"
 #include "H5Fed.h"