diff --git a/src/mhd.h b/src/mhd.h
index b3a7f035c89ac09658aafd0a66414dacd2e07d9e..8b29a93964e4b7f8e0ce4894ef4f599c45f4351d 100644
--- a/src/mhd.h
+++ b/src/mhd.h
@@ -30,7 +30,6 @@
 #include "./mhd/None/mhd.h"
 #include "./mhd/None/mhd_iact.h"
 #define MHD_IMPLEMENTATION "No MHD scheme"
-#define EXTRA_HYDRO_LOOP
 #else
 #error "Invalid choice of MHD variant"
 #endif