diff --git a/src/coreprofiles.f90 b/src/coreprofiles.f90
index bd042c3..3e0b7ba 100644
--- a/src/coreprofiles.f90
+++ b/src/coreprofiles.f90
@@ -462,9 +462,12 @@ contains
 
         if (psi > tail%start .and. psi < tail%end) then
           ! Fall back to the midpoint of ψ₀ and the launcher ψ
+          call log_warning('downscaled tail to not reach the wave launcher', &
+                           mod='coreprofiles', proc='set_profiles_spline')
+          write (msg, '(a, g0.3, a, g0.3, " → ", g0.3)') &
+            'launcher: ψ=', psi, ' boundary: ψ=', tail%end, (tail%start + psi)/2
+            call log_debug(msg, mod='coreprofiles', proc='set_profiles_spline')
           tail%end = (tail%start + psi)/2
-            call log_warning('downscaled tail to not reach the wave launcher', &
-                             mod='coreprofiles', proc='set_profiles_spline')
         end if
 
         if (psi > 0 .and. psi < tail%start) then