diff --git a/builds/cmake/platform.hpp.in b/builds/cmake/platform.hpp.in
index 14f1898e..10eaba45 100644
--- a/builds/cmake/platform.hpp.in
+++ b/builds/cmake/platform.hpp.in
@@ -35,7 +35,7 @@
 
 #cmakedefine ZMQ_HAVE_CURVE
 #cmakedefine ZMQ_USE_TWEETNACL
-#cmakedefine HAVE_LIBSODIUM
+#cmakedefine ZMQ_USE_LIBSODIUM
 
 #ifdef _AIX
   #define ZMQ_HAVE_AIX