diff --git a/3rdparty/CMakeLists.txt b/3rdparty/CMakeLists.txt
index 2e7b90a..fa3a626 100644
--- a/3rdparty/CMakeLists.txt
+++ b/3rdparty/CMakeLists.txt
@@ -3,7 +3,7 @@ if (NOT SYSTEM_SQLITE)
     add_subdirectory(sqlite3)
 endif()
 
-if (ENABLE_IAX)
+if (ENABLE_IAX1)
     add_subdirectory(iaxclient/lib)
 endif()