diff --git a/configure.ac.in b/configure.ac.in
index 8b0ea411..f4f2f4f7 100644
--- a/configure.ac.in
+++ b/configure.ac.in
@@ -470,7 +470,7 @@ dnl
 dnl Some functions
 dnl
 
-AC_CHECK_FUNCS([calloc malloc free popen sysinfo getloadavg memrchr])
+AC_CHECK_FUNCS([calloc malloc free popen sysinfo getloadavg memrchr strndup])
 AC_SEARCH_LIBS(clock_gettime, [rt],
                [AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [Define if you have clock_gettime()])],
                [AC_CHECK_FUNCS([gettimeofday], [], [AC_MSG_ERROR([gettimeofday() not available!])])], [])
diff --git a/src/common.c b/src/common.c
index 921998aa..240de431 100644
--- a/src/common.c
+++ b/src/common.c
@@ -34,6 +34,20 @@
 #include <sys/time.h>
 #include <pthread.h>
 
+#ifndef HAVE_STRNDUP
+// use our own strndup() if it's not available
+char *strndup(const char *s, size_t n)
+{
+	if (strlen(s) + 1 > n) {
+		char *ret = malloc(n);
+		strncpy(ret, s, n);
+		return ret;
+	} else {
+		return strdup(s);
+	}
+}
+#endif /* HAVE_STRNDUP */
+
 void update_uname(void)
 {
 	uname(&info.uname_s);
diff --git a/src/conky.h b/src/conky.h
index 305f411b..47d229f3 100644
--- a/src/conky.h
+++ b/src/conky.h
@@ -64,6 +64,11 @@
 #include <machine/apmvar.h>
 #endif /* __OpenBSD__ */
 
+#ifndef HAVE_STRNDUP
+// use our own strndup() if it's not available
+char *strndup(const char *s, size_t n);
+#endif /* HAVE_STRNDUP */
+
 #ifdef AUDACIOUS
 #include "audacious.h"
 #endif