diff --git a/data/json/mapgen_palettes/roof_palette.json b/data/json/mapgen_palettes/roof_palette.json
index d0357b85d329d..09d40c691e834 100644
--- a/data/json/mapgen_palettes/roof_palette.json
+++ b/data/json/mapgen_palettes/roof_palette.json
@@ -57,9 +57,8 @@
       "1": {
         "chunks": [ [ "residential_1x2_solar", 6 ], [ "residential_2x2_solar", 2 ], [ "residential_1x3_solar", 3 ], [ "null", 88 ] ]
       },
-      "2": {
-        "chunks": [ [ "industrial_1x5_solar" ] ]
-      },
+      "2": { "chunks": [ [ "industrial_1x5_solar" ] ] },
+      "3": { "chunks": [ [ "industrial_1x1_solar" ] ] },
       "5": { "chunks": [ [ "null", 90 ], [ "roof_1x1_birdnest", 10 ] ] },
       "-": { "chunks": [ [ "null", 1000 ], [ "roof_1x1_birdnest", 5 ] ] }
     },