diff --git a/contrib/base64-cmake/CMakeLists.txt b/contrib/base64-cmake/CMakeLists.txt
index 0d202ccbc52..333e0a96a0b 100644
--- a/contrib/base64-cmake/CMakeLists.txt
+++ b/contrib/base64-cmake/CMakeLists.txt
@@ -1,4 +1,4 @@
-if(ARCH_AMD64 OR ARCH_AARCH64 OR ARCH_PPC64LE)
+if(ARCH_AMD64 OR ARCH_AARCH64 OR ARCH_PPC64LE OR ARCH_S390X)
     option (ENABLE_BASE64 "Enable base64" ${ENABLE_LIBRARIES})
 elseif(ENABLE_BASE64)
     message (${RECONFIGURE_MESSAGE_LEVEL} "base64 library is only supported on x86_64 and aarch64")