diff --git a/src/lang/spanish.txt b/src/lang/spanish.txt
index 59f51abdd3..fdb95bfcb5 100644
--- a/src/lang/spanish.txt
+++ b/src/lang/spanish.txt
@@ -2592,7 +2592,7 @@ STR_TRANSPARENT_LOADING_TOOLTIP                                 :{BLACK}Ajustar
 STR_TRANSPARENT_INVISIBLE_TOOLTIP                               :{BLACK}Establece los objetos como invisibles en vez de transparentes
 
 # Linkgraph legend window
-STR_LINKGRAPH_LEGEND_CAPTION                                    :{BLACK}Leyenda de Flujos de Carga
+STR_LINKGRAPH_LEGEND_CAPTION                                    :{BLACK}Leyenda de flujos de carga
 STR_LINKGRAPH_LEGEND_ALL                                        :{BLACK}Todas
 STR_LINKGRAPH_LEGEND_NONE                                       :{BLACK}Ninguna
 STR_LINKGRAPH_LEGEND_SELECT_COMPANIES                           :{BLACK}Seleccione las empresas a mostrar