diff --git a/loginutils/passwd.c b/loginutils/passwd.c
index b83db0083..a7006f054 100644
--- a/loginutils/passwd.c
+++ b/loginutils/passwd.c
@@ -15,6 +15,7 @@
 
 #include "libbb.h"
 #include <syslog.h>
+#include <sys/resource.h> /* setrlimit */
 
 static void nuke_str(char *str)
 {
diff --git a/miscutils/time.c b/miscutils/time.c
index 945f15f0d..ffed38632 100644
--- a/miscutils/time.c
+++ b/miscutils/time.c
@@ -16,6 +16,7 @@
 //usage:     "\n	-v	Verbose"
 
 #include "libbb.h"
+#include <sys/resource.h> /* getrusage */
 
 /* Information on the resources used by a child process.  */
 typedef struct {
diff --git a/networking/inetd.c b/networking/inetd.c
index 1308d74c7..00baf6971 100644
--- a/networking/inetd.c
+++ b/networking/inetd.c
@@ -165,6 +165,7 @@
 //usage:     "\n		(default: 0 - disabled)"
 
 #include <syslog.h>
+#include <sys/resource.h> /* setrlimit */
 #include <sys/socket.h> /* un.h may need this */
 #include <sys/un.h>
 
diff --git a/networking/ntpd.c b/networking/ntpd.c
index 72e9d0be2..5b92db6f6 100644
--- a/networking/ntpd.c
+++ b/networking/ntpd.c
@@ -46,6 +46,7 @@
 #include "libbb.h"
 #include <math.h>
 #include <netinet/ip.h> /* For IPTOS_LOWDELAY definition */
+#include <sys/resource.h> /* setpriority */
 #include <sys/timex.h>
 #ifndef IPTOS_LOWDELAY
 # define IPTOS_LOWDELAY 0x10
diff --git a/networking/ntpd_simple.c b/networking/ntpd_simple.c
index 4ad44e4f3..1b7c66b84 100644
--- a/networking/ntpd_simple.c
+++ b/networking/ntpd_simple.c
@@ -7,6 +7,7 @@
  */
 #include "libbb.h"
 #include <netinet/ip.h> /* For IPTOS_LOWDELAY definition */
+#include <sys/resource.h> /* setpriority */
 #ifndef IPTOS_LOWDELAY
 # define IPTOS_LOWDELAY 0x10
 #endif
diff --git a/runit/chpst.c b/runit/chpst.c
index ac296babf..ed72c8b8c 100644
--- a/runit/chpst.c
+++ b/runit/chpst.c
@@ -91,6 +91,7 @@ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //usage:     "\n			a SIGXCPU after N seconds"
 
 #include "libbb.h"
+#include <sys/resource.h> /* getrlimit */
 
 /*
 Five applets here: chpst, envdir, envuidgid, setuidgid, softlimit.
diff --git a/shell/shell_common.c b/shell/shell_common.c
index 51c92d60e..780e27ebd 100644
--- a/shell/shell_common.c
+++ b/shell/shell_common.c
@@ -18,6 +18,7 @@
  */
 #include "libbb.h"
 #include "shell_common.h"
+#include <sys/resource.h> /* getrlimit */
 
 const char defifsvar[] ALIGN1 = "IFS= \t\n";