diff --git a/src/utils/zcl_abapgit_diff.clas.testclasses.abap b/src/utils/zcl_abapgit_diff.clas.testclasses.abap
index 074709fb7..2746a78ae 100644
--- a/src/utils/zcl_abapgit_diff.clas.testclasses.abap
+++ b/src/utils/zcl_abapgit_diff.clas.testclasses.abap
@@ -528,12 +528,14 @@ CLASS ltcl_diff IMPLEMENTATION.
     add_new( ` ` ). " one space
     add_new( `   ` ). " some spaces
     add_new( 'E' ).
+    add_new( 'X' ). " no trailing space
 
     add_old( 'A' ).
     add_old( `     ` ). " some spaces
     add_old( `  ` ). " two spaces
     add_old( `` ). " empty line
     add_old( 'E' ).
+    add_old( `X  ` ). " some trailing space
 
     add_expected( iv_new_num = '    1'
                   iv_new     = 'A'
@@ -560,6 +562,11 @@ CLASS ltcl_diff IMPLEMENTATION.
                   iv_result  = zif_abapgit_definitions=>c_diff-unchanged
                   iv_old_num = '    5'
                   iv_old     = 'E' ).
+    add_expected( iv_new_num = '    6'
+                  iv_new     = 'X'
+                  iv_result  = zif_abapgit_definitions=>c_diff-update
+                  iv_old_num = '    6'
+                  iv_old     = `X  ` ).
 
     test( ).