diff --git a/src/libhashkit/CMakeLists.txt b/src/libhashkit/CMakeLists.txt
index b820d27b..fb732fcf 100644
--- a/src/libhashkit/CMakeLists.txt
+++ b/src/libhashkit/CMakeLists.txt
@@ -17,7 +17,6 @@ set(libhashkit_sources
         murmur3.cc
         murmur3_api.cc
         one_at_a_time.cc
-        rijndael.cc
         str_algorithm.cc
         strerror.cc
         string.cc
@@ -53,6 +52,10 @@ if(ENABLE_OPENSSL_CRYPTO)
         endif()
 endif()
 
+if (NOT OPENSSL_CRYPTO_LIBRARY)
+        set (libhashkit_sources ${libhashkit_sources} rijndael.cc)
+endif()
+
 configure_file(hashkitcon.h.in hashkitcon.h @ONLY)
 
 install(TARGETS libhashkit EXPORT libhashkit-targets