diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index e0e98f8..47bcd33 100644
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -30,6 +30,7 @@
     (Arland Childers)
   - retro-repl.c now uses an external image
   - removed barebones.c (overlaps w/new retro-repl.c)
+  - retro-runtime.c now based on standard retro.c
 
 - nga-nim
 
diff --git a/vm/nga-c/retro-runtime.c b/vm/nga-c/retro-runtime.c
index e828489..a87a66c 100644
--- a/vm/nga-c/retro-runtime.c
+++ b/vm/nga-c/retro-runtime.c
@@ -15,6 +15,7 @@
 #include <fcntl.h>
 #include <limits.h>
 #include <signal.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/vm/nga-c/retro.c b/vm/nga-c/retro.c
index 49f98c5..5436dd4 100644
--- a/vm/nga-c/retro.c
+++ b/vm/nga-c/retro.c
@@ -15,6 +15,7 @@
 #include <fcntl.h>
 #include <limits.h>
 #include <signal.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>