diff --git a/config2.h.in b/config2.h.in
index fcae682c..940d5410 100644
--- a/config2.h.in
+++ b/config2.h.in
@@ -613,6 +613,9 @@
 /* Define to 1 if you have the `raise' function. */
 #mesondefine HAVE_RAISE
 
+/* Define to 1 ig you have the `RAND_add' function. */
+#mesondefine HAVE_RAND_ADD
+
 /* Define to 1 if you have the `RAND_bytes' function. */
 #mesondefine HAVE_RAND_BYTES
 
diff --git a/configure.ac b/configure.ac
index 45044bbf..cbfa93be 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1224,7 +1224,7 @@ else
 		EL_CONFIG(CONFIG_OPENSSL, [OpenSSL])
 		chosen_ssl_library="OpenSSL"
 
-		AC_CHECK_FUNCS(RAND_bytes)
+		AC_CHECK_FUNCS(RAND_bytes RAND_add)
 		AC_CHECK_FUNCS(ASN1_STRING_get0_data)
 
 		CFLAGS="$CFLAGS_X"
diff --git a/meson.build b/meson.build
index 16a50ad0..068a915d 100644
--- a/meson.build
+++ b/meson.build
@@ -768,6 +768,10 @@ if compiler.has_function('event_get_struct_event_size', prefix : eh, dependencie
     conf_data.set('HAVE_EVENT_GET_STRUCT_EVENT_SIZE', 1)
 endif
 
+if compiler.has_function('RAND_add', prefix: '#include <openssl/rand.h>', dependencies: ssldeps)
+    conf_data.set('HAVE_RAND_ADD', 1)
+endif
+
 if compiler.has_function('RAND_bytes', prefix: '#include <openssl/rand.h>', dependencies: ssldeps)
     conf_data.set('HAVE_RAND_BYTES', 1)
 endif