diff --git a/src/PYTHON/fix_python.cpp b/src/PYTHON/fix_python.cpp
index e1c0dd1fbc..a7b1edfda1 100644
--- a/src/PYTHON/fix_python.cpp
+++ b/src/PYTHON/fix_python.cpp
@@ -15,6 +15,7 @@
    Contributing author: Axel Kohlmeyer and Richard Berger (Temple U)
 ------------------------------------------------------------------------- */
 
+#include <Python.h>
 #include <stdio.h>
 #include <string.h>
 #include "fix_python.h"