diff --git a/src/lang/slovak.txt b/src/lang/slovak.txt
--- a/src/lang/slovak.txt
+++ b/src/lang/slovak.txt
@@ -255,15 +255,15 @@ STR_COLOUR_WHITE                        
 STR_COLOUR_RANDOM                                               :Náhodná
 
 # Units used in OpenTTD
-STR_UNITS_VELOCITY_IMPERIAL                                     :{COMMA} mph
-STR_UNITS_VELOCITY_METRIC                                       :{COMMA} km/h
-STR_UNITS_VELOCITY_SI                                           :{COMMA} m/s
+STR_UNITS_VELOCITY_IMPERIAL                                     :{DECIMAL} mph
+STR_UNITS_VELOCITY_METRIC                                       :{DECIMAL} km/h
+STR_UNITS_VELOCITY_SI                                           :{DECIMAL} m/s
 STR_UNITS_VELOCITY_GAMEUNITS                                    :{DECIMAL}{NBSP}políč{P ko ka ok}/deň
-STR_UNITS_VELOCITY_KNOTS                                        :{COMMA}{NBSP}uzlov
-
-STR_UNITS_POWER_IMPERIAL                                        :{COMMA}hp
-STR_UNITS_POWER_METRIC                                          :{COMMA}hp
-STR_UNITS_POWER_SI                                              :{COMMA}kW
+STR_UNITS_VELOCITY_KNOTS                                        :{DECIMAL}{NBSP}uzlov
+
+STR_UNITS_POWER_IMPERIAL                                        :{DECIMAL}hp
+STR_UNITS_POWER_METRIC                                          :{DECIMAL}hp
+STR_UNITS_POWER_SI                                              :{DECIMAL}kW
 
 STR_UNITS_POWER_IMPERIAL_TO_WEIGHT_IMPERIAL                     :{DECIMAL}{NBSP}hp/t
 STR_UNITS_POWER_IMPERIAL_TO_WEIGHT_METRIC                       :{DECIMAL}{NBSP}hp/t
@@ -275,29 +275,29 @@ STR_UNITS_POWER_SI_TO_WEIGHT_IMPERIAL   
 STR_UNITS_POWER_SI_TO_WEIGHT_METRIC                             :{DECIMAL}{NBSP}kW/t
 STR_UNITS_POWER_SI_TO_WEIGHT_SI                                 :{DECIMAL}{NBSP}W/kg
 
-STR_UNITS_WEIGHT_SHORT_IMPERIAL                                 :{COMMA}t
-STR_UNITS_WEIGHT_SHORT_METRIC                                   :{COMMA}t
-STR_UNITS_WEIGHT_SHORT_SI                                       :{COMMA}kg
-
-STR_UNITS_WEIGHT_LONG_IMPERIAL                                  :{COMMA} ton{P "a" "y" ""}
-STR_UNITS_WEIGHT_LONG_METRIC                                    :{COMMA} ton{P a y ""}
-STR_UNITS_WEIGHT_LONG_SI                                        :{COMMA} kg
-
-STR_UNITS_VOLUME_SHORT_IMPERIAL                                 :{COMMA}gal
-STR_UNITS_VOLUME_SHORT_METRIC                                   :{COMMA}l
-STR_UNITS_VOLUME_SHORT_SI                                       :{COMMA}m³
-
-STR_UNITS_VOLUME_LONG_IMPERIAL                                  :{COMMA} galón{P "" "y" "ov"}
-STR_UNITS_VOLUME_LONG_METRIC                                    :{COMMA} lit{P er re rov}
-STR_UNITS_VOLUME_LONG_SI                                        :{COMMA} m³
-
-STR_UNITS_FORCE_IMPERIAL                                        :{COMMA} lbf
-STR_UNITS_FORCE_METRIC                                          :{COMMA} kgf
-STR_UNITS_FORCE_SI                                              :{COMMA} kN
-
-STR_UNITS_HEIGHT_IMPERIAL                                       :{COMMA} st{P opa opy ôp}
-STR_UNITS_HEIGHT_METRIC                                         :{COMMA} m
-STR_UNITS_HEIGHT_SI                                             :{COMMA} m
+STR_UNITS_WEIGHT_SHORT_IMPERIAL                                 :{DECIMAL}t
+STR_UNITS_WEIGHT_SHORT_METRIC                                   :{DECIMAL}t
+STR_UNITS_WEIGHT_SHORT_SI                                       :{DECIMAL}kg
+
+STR_UNITS_WEIGHT_LONG_IMPERIAL                                  :{DECIMAL} ton{P "a" "y" ""}
+STR_UNITS_WEIGHT_LONG_METRIC                                    :{DECIMAL} ton{P a y ""}
+STR_UNITS_WEIGHT_LONG_SI                                        :{DECIMAL} kg
+
+STR_UNITS_VOLUME_SHORT_IMPERIAL                                 :{DECIMAL}gal
+STR_UNITS_VOLUME_SHORT_METRIC                                   :{DECIMAL}l
+STR_UNITS_VOLUME_SHORT_SI                                       :{DECIMAL}m³
+
+STR_UNITS_VOLUME_LONG_IMPERIAL                                  :{DECIMAL} galón{P "" "y" "ov"}
+STR_UNITS_VOLUME_LONG_METRIC                                    :{DECIMAL} lit{P er re rov}
+STR_UNITS_VOLUME_LONG_SI                                        :{DECIMAL} m³
+
+STR_UNITS_FORCE_IMPERIAL                                        :{DECIMAL} lbf
+STR_UNITS_FORCE_METRIC                                          :{DECIMAL} kgf
+STR_UNITS_FORCE_SI                                              :{DECIMAL} kN
+
+STR_UNITS_HEIGHT_IMPERIAL                                       :{DECIMAL} st{P opa opy ôp}
+STR_UNITS_HEIGHT_METRIC                                         :{DECIMAL} m
+STR_UNITS_HEIGHT_SI                                             :{DECIMAL} m
 
 # Common window strings
 STR_LIST_FILTER_TITLE                                           :{BLACK}Filter: