diff --git a/src-modules/module/viz/schluesseltabellen/fm_templates.unl b/src-modules/module/viz/schluesseltabellen/fm_templates.unl
index 0e46099..ce0de09 100644
--- a/src-modules/module/viz/schluesseltabellen/fm_templates.unl
+++ b/src-modules/module/viz/schluesseltabellen/fm_templates.unl
@@ -1,5 +1,7 @@
 171^VIZ-Makros^<#macro create_temp_tables>\
 \
+<@drop_temp_tables />\
+\
 CREATE temp TABLE tmp_viz_property_renderer\
 (\
    tid            serial         NOT NULL,\
diff --git a/src-modules/module/viz/schluesseltabellen/viz_properties_d3js_fuellen.sql b/src-modules/module/viz/schluesseltabellen/viz_properties_d3js_fuellen.sql
index 0c78838..65da483 100644
--- a/src-modules/module/viz/schluesseltabellen/viz_properties_d3js_fuellen.sql
+++ b/src-modules/module/viz/schluesseltabellen/viz_properties_d3js_fuellen.sql
@@ -190,6 +190,7 @@
 />
 
 
+<@drop_temp_tables />
 
 <@create_temp_tables />