diff --git a/_webp.c b/_webp.c
index a8c6d40af..c45d1ff77 100644
--- a/_webp.c
+++ b/_webp.c
@@ -1,5 +1,6 @@
 #define PY_SSIZE_T_CLEAN
 #include <Python.h>
+#include "Imaging.h"
 #include "py3.h"
 #include <webp/encode.h>
 #include <webp/decode.h>
diff --git a/libImaging/ImPlatform.h b/libImaging/ImPlatform.h
index a04bd9dcd..71c2e0d8e 100644
--- a/libImaging/ImPlatform.h
+++ b/libImaging/ImPlatform.h
@@ -9,6 +9,11 @@
 
 #include "Python.h"
 
+/* Workaround issue #2479 */
+#if PY_VERSION_HEX < 0x03070000 && defined(PySlice_GetIndicesEx)
+#undef PySlice_GetIndicesEx
+#endif
+
 /* Check that we have an ANSI compliant compiler */
 #ifndef HAVE_PROTOTYPES
 #error Sorry, this library requires support for ANSI prototypes.
diff --git a/path.c b/path.c
index 824fbdd89..4715e0679 100644
--- a/path.c
+++ b/path.c
@@ -27,6 +27,7 @@
 
 
 #include "Python.h"
+#include "Imaging.h"
 
 #include <math.h>