diff --git a/configure.ac b/configure.ac
index c6250401..51d9da93 100644
--- a/configure.ac
+++ b/configure.ac
@@ -129,6 +129,7 @@ AC_DEFINE_UNQUOTED(WIRED_STORAGEDIR, "${wired_storagedir}",
 
 AC_CHECK_FUNCS(explicit_bzero)
 AC_CHECK_FUNCS(rawmemchr)
+AC_CHECK_FUNCS(reallocarray)
 
 AC_CHECK_HEADERS(linux/types.h linux/if_alg.h)
 
diff --git a/src/missing.h b/src/missing.h
index 2cc80aee..a5b92952 100644
--- a/src/missing.h
+++ b/src/missing.h
@@ -37,3 +37,10 @@ _Pragma("GCC diagnostic ignored \"-Wstringop-overflow=\"")
 _Pragma("GCC diagnostic pop")
 }
 #endif
+
+#ifndef HAVE_REALLOCARRAY
+static inline void *reallocarray(void *ptr, size_t nmemb, size_t size)
+{
+	return realloc(ptr, nmemb * size);
+}
+#endif