diff --git a/src/00/01/z2ui5_cl_ajson_filter_lib.clas.locals_imp.abap b/src/00/01/z2ui5_cl_ajson_filter_lib.clas.locals_imp.abap
index c06ef183..b9a09d32 100644
--- a/src/00/01/z2ui5_cl_ajson_filter_lib.clas.locals_imp.abap
+++ b/src/00/01/z2ui5_cl_ajson_filter_lib.clas.locals_imp.abap
@@ -72,7 +72,7 @@ CLASS lcl_paths_filter IMPLEMENTATION.
     ENDIF.
 
     LOOP AT it_skip_paths INTO lv_s.
-      lv_s = to_lower( lv_s ).
+      lv_s = condense( lv_s ).
       APPEND lv_s TO lt_tab.
     ENDLOOP.
 
@@ -83,7 +83,7 @@ CLASS lcl_paths_filter IMPLEMENTATION.
           DELETE lt_tab INDEX sy-tabix.
           CONTINUE.
         ENDIF.
-        <s> = condense( to_lower( <s> ) ).
+        <s> = condense( <s> ).
       ENDLOOP.
     ENDIF.
 
diff --git a/src/00/01/z2ui5_cl_ajson_filter_lib.clas.testclasses.abap b/src/00/01/z2ui5_cl_ajson_filter_lib.clas.testclasses.abap
index 49d8cd57..e8c13edb 100644
--- a/src/00/01/z2ui5_cl_ajson_filter_lib.clas.testclasses.abap
+++ b/src/00/01/z2ui5_cl_ajson_filter_lib.clas.testclasses.abap
@@ -10,6 +10,7 @@ CLASS ltcl_filters_test DEFINITION FINAL
     METHODS path_filter_w_patterns FOR TESTING RAISING z2ui5_cx_ajson_error.
     METHODS path_filter_deep FOR TESTING RAISING z2ui5_cx_ajson_error.
     METHODS and_filter FOR TESTING RAISING z2ui5_cx_ajson_error.
+    METHODS mixed_case_filter FOR TESTING RAISING z2ui5_cx_ajson_error.
 ENDCLASS.
 
 
@@ -227,4 +228,36 @@ CLASS ltcl_filters_test IMPLEMENTATION.
 
   ENDMETHOD.
 
+  METHOD mixed_case_filter.
+
+    DATA li_json TYPE REF TO z2ui5_if_ajson.
+    DATA li_json_filtered TYPE REF TO z2ui5_if_ajson.
+
+    li_json = z2ui5_cl_ajson=>create_empty( ).
+    li_json->set(
+      iv_path = '/a'
+      iv_val  = '1' ).
+    li_json->set(
+      iv_path = '/bB'
+      iv_val  = '2' ).
+    li_json->set(
+      iv_path = '/CC'
+      iv_val  = '3' ).
+    li_json->set(
+      iv_path = '/cc'
+      iv_val  = '4' ).
+    li_json->set(
+      iv_path = '/d'
+      iv_val  = 5 ).
+
+    li_json_filtered = z2ui5_cl_ajson=>create_from(
+      ii_source_json = li_json
+      ii_filter = z2ui5_cl_ajson_filter_lib=>create_path_filter( iv_skip_paths = '/bB,/CC' ) ).
+
+    cl_abap_unit_assert=>assert_equals(
+      act = li_json_filtered->stringify( )
+      exp = '{"a":"1","cc":"4","d":5}' ).
+
+  ENDMETHOD.
+
 ENDCLASS.