diff --git a/Misc/NEWS.d/next/Build/2021-09-11-20-36-02.bpo-45174.aG9lsL.rst b/Misc/NEWS.d/next/Build/2021-09-11-20-36-02.bpo-45174.aG9lsL.rst
new file mode 100644
index 000000000000000..2ec930ded5d480d
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2021-09-11-20-36-02.bpo-45174.aG9lsL.rst
@@ -0,0 +1 @@
+Fixes NIS module build on the DragonFlyBSD platform.
\ No newline at end of file
diff --git a/Modules/nismodule.c b/Modules/nismodule.c
index 6655451ebd2fbf7..84ea805afbf05c5 100644
--- a/Modules/nismodule.c
+++ b/Modules/nismodule.c
@@ -115,10 +115,12 @@ nis_mapname(char *map, int *pfix)
     return map;
 }
 
-#if defined(__APPLE__) || defined(__OpenBSD__) || defined(__FreeBSD__)
+#if defined(__APPLE__) || defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__DragonFly__)
 typedef int (*foreachfunc)(unsigned long, char *, int, char *, int, void *);
+typedef unsigned long nisstatus;
 #else
 typedef int (*foreachfunc)(int, char *, int, char *, int, char *);
+typedef int nisstatus;
 #endif
 
 struct ypcallback_data {
@@ -128,7 +130,7 @@ struct ypcallback_data {
 };
 
 static int
-nis_foreach(int instatus, char *inkey, int inkeylen, char *inval,
+nis_foreach(nisstatus instatus, char *inkey, int inkeylen, char *inval,
              int invallen, struct ypcallback_data *indata)
 {
     if (instatus == YP_TRUE) {