diff --git a/bmad/low_level/normal_mode_dispersion.f90 b/bmad/low_level/normal_mode_dispersion.f90
index 7d2c277c2..d5493c555 100644
--- a/bmad/low_level/normal_mode_dispersion.f90
+++ b/bmad/low_level/normal_mode_dispersion.f90
@@ -15,7 +15,7 @@
 
 subroutine normal_mode_dispersion(ele, reverse) 
 
-use bmad_interface
+use bmad_interface, dummy => normal_mode_dispersion
 
 implicit none