diff --git a/strongswan-5.6.0-uintptr_t.patch b/strongswan-5.6.0-uintptr_t.patch
new file mode 100644
index 0000000..dbf90aa
--- /dev/null
+++ b/strongswan-5.6.0-uintptr_t.patch
@@ -0,0 +1,12 @@
+diff -Naur strongswan-5.6.0-orig/src/libstrongswan/utils/utils/memory.h strongswan-5.6.0/src/libstrongswan/utils/utils/memory.h
+--- strongswan-5.6.0-orig/src/libstrongswan/utils/utils/memory.h	2017-08-14 02:48:41.000000000 -0400
++++ strongswan-5.6.0/src/libstrongswan/utils/utils/memory.h	2017-09-12 01:15:29.690527667 -0400
+@@ -14,6 +14,8 @@
+  * for more details.
+  */
+ 
++#include <stdint.h> /* for uintptr_t */
++
+ /**
+  * @defgroup memory_i memory
+  * @{ @ingroup utils_i