diff --git a/src/libstrongswan/plugins/wolfssl/wolfssl_common.h b/src/libstrongswan/plugins/wolfssl/wolfssl_common.h
index 9c944e711..98a5593aa 100644
--- a/src/libstrongswan/plugins/wolfssl/wolfssl_common.h
+++ b/src/libstrongswan/plugins/wolfssl/wolfssl_common.h
@@ -80,7 +80,4 @@ typedef union {
 
 #undef PARSE_ERROR
 
-/* Eliminate macro conflicts */
-#undef RNG
-
 #endif /* WOLFSSL_PLUGIN_COMMON_H_ */
diff --git a/src/libstrongswan/plugins/wolfssl/wolfssl_plugin.c b/src/libstrongswan/plugins/wolfssl/wolfssl_plugin.c
index d4b4989b0..fa4edeeef 100644
--- a/src/libstrongswan/plugins/wolfssl/wolfssl_plugin.c
+++ b/src/libstrongswan/plugins/wolfssl/wolfssl_plugin.c
@@ -47,6 +47,8 @@
 
 #include <wolfssl/ssl.h>
 
+#undef RNG
+
 #ifndef FIPS_MODE
 #define FIPS_MODE 0
 #endif