diff --git a/client/src/cmdhw.c b/client/src/cmdhw.c
index 48e337743..0114d2c27 100644
--- a/client/src/cmdhw.c
+++ b/client/src/cmdhw.c
@@ -23,6 +23,9 @@
 #include <ctype.h>
 
 #ifdef HAVE_PYTHON
+#ifdef _POSIX_C_SOURCE
+#undef _POSIX_C_SOURCE
+#endif
 #include <Python.h>
 #endif
 
diff --git a/client/src/cmdscript.c b/client/src/cmdscript.c
index f80210897..a0b5aa6cb 100644
--- a/client/src/cmdscript.c
+++ b/client/src/cmdscript.c
@@ -20,6 +20,9 @@
 #include <string.h>
 
 #ifdef HAVE_PYTHON
+#ifdef _POSIX_C_SOURCE
+#undef _POSIX_C_SOURCE
+#endif
 //#define PY_SSIZE_T_CLEAN
 #include <Python.h>
 #include <ctype.h>