diff --git a/sources/evolution.F90 b/sources/evolution.F90
index 3c50ef9..0359800 100644
--- a/sources/evolution.F90
+++ b/sources/evolution.F90
@@ -3323,19 +3323,19 @@ module evolution
 !
       do i = 2, stages
 
-          dtm = c(i) * dt
-          tm  = time + dtm
+        dtm = c(i) * dt
+        tm  = time + dtm
 
-          pdata => list_data
-          do while (associated(pdata))
+        pdata => list_data
+        do while (associated(pdata))
 
-            call update_increment(pdata)
-            call update_sources(pdata, tm, dtm, pdata%du(:,:,:,:))
+          call update_increment(pdata)
+          call update_sources(pdata, tm, dtm, pdata%du(:,:,:,:))
 
-            pdata => pdata%next
-          end do
+          pdata => pdata%next
+        end do
 
-          call boundary_fluxes()
+        call boundary_fluxes()
 
         pdata => list_data
         do while (associated(pdata))