diff --git a/src/fraggle/fraggle_regime.f90 b/src/fraggle/fraggle_regime.f90
index eb614d951..2888d234f 100644
--- a/src/fraggle/fraggle_regime.f90
+++ b/src/fraggle/fraggle_regime.f90
@@ -179,7 +179,7 @@ subroutine fraggle_regime_collresolve(Mcb, m1, m2, rad1, rad2, xh1, xh2, vb1, vb
          Mlr = Mtot
          Mslr = 0.0_DP
          Qloss = 0.0_DP
-         write(*,*) "FORCE MERGE"
+         call fraggle_io_log_one_message("Fragments would have mass below the minimum. Converting this collision into a merger.")
       else 
          if( Vimp < Vescp) then
             regime = COLLRESOLVE_REGIME_MERGE !perfect merging regime