diff --git a/src/common/common.h b/src/common/common.h
index 813e0a13a..65d24e8b5 100644
--- a/src/common/common.h
+++ b/src/common/common.h
@@ -27,7 +27,7 @@ extern "C" {
  * using OpenSSL functions when OQS_USE_OPENSSL is defined, and
  * standard C library functions otherwise.
  */
-#if defined(OQS_USE_OPENSSL) && defined(OPENSSL_VERSION_NUMBER)
+#if (defined(OQS_USE_OPENSSL) || defined(OQS_DLOPEN_OPENSSL)) && defined(OPENSSL_VERSION_NUMBER)
 #include <openssl/crypto.h>
 
 /**