diff --git a/src/scripts/component/genome-browser.ts b/src/scripts/component/genome-browser.ts
index 0637b6e14d7d149c44aa705f72cfc1301f35551d..c34325deb19dd9b81399c60c27bc6c6c5684bc1d 100644
--- a/src/scripts/component/genome-browser.ts
+++ b/src/scripts/component/genome-browser.ts
@@ -1,5 +1,5 @@
 import SelectedChromosome from "./selected-chromosome";
-import BrushableChromosomeRule from "./rules/brushable-chromosome-rule";
+import BrushableChromosomeRule from "./ruler/brushable-chromosome";
 // D3
 import { select, Selection } from "d3-selection";
 
diff --git a/src/scripts/component/rules/brushable-chromosome-rule.ts b/src/scripts/component/ruler/brushable-chromosome.ts
similarity index 98%
rename from src/scripts/component/rules/brushable-chromosome-rule.ts
rename to src/scripts/component/ruler/brushable-chromosome.ts
index a0c5880a6b14767cc9dd0e6799fedf4e2b22d13b..29b573b12e05e6ca08be60fa3057890bcdf108e3 100644
--- a/src/scripts/component/rules/brushable-chromosome-rule.ts
+++ b/src/scripts/component/ruler/brushable-chromosome.ts
@@ -1,7 +1,7 @@
 import { BrushableAxisData, GenericAxisData } from "../../types";
 import { select, Selection, event } from "d3-selection";
 import { scaleLinear } from "d3-scale";
-import GenomeAxis from "./chromosome-rule";
+import GenomeAxis from "./chromosome";
 import { brushX, BrushBehavior } from "d3-brush";
 import { format } from "d3-format";
 
diff --git a/src/scripts/component/rules/chromosome-rule.ts b/src/scripts/component/ruler/chromosome.ts
similarity index 100%
rename from src/scripts/component/rules/chromosome-rule.ts
rename to src/scripts/component/ruler/chromosome.ts
diff --git a/src/scripts/component/selected-chromosome.ts b/src/scripts/component/selected-chromosome.ts
index 57c3c8d14dcd35d8744423319773f0de0e27a952..b9d69b4faa513d3dc288a9f40d52b1887d13105f 100644
--- a/src/scripts/component/selected-chromosome.ts
+++ b/src/scripts/component/selected-chromosome.ts
@@ -1,7 +1,7 @@
 // D3
 import { select, Selection } from "d3-selection";
 import { SelectedChromosomeData, GenericAxisData, GeneData } from "../types";
-import ChromosomeRule from "./rules/chromosome-rule";
+import ChromosomeRule from "./ruler/chromosome";
 import Gene from "./sequence/gene";
 import { drag } from "d3-drag";
 
diff --git a/src/scripts/index.ts b/src/scripts/index.ts
index 6f9e784bd744258c0d12bf7c36eae8bf49b70264..3f58aa56ff0615f0f2a175aad3d527f8b8072d46 100644
--- a/src/scripts/index.ts
+++ b/src/scripts/index.ts
@@ -1,5 +1,5 @@
-export { default as BrushableChromosomeRuler } from "./component/rules/brushable-chromosome-rule";
-export { default as ChromosomeRuler } from "./component/rules/chromosome-rule";
+export { default as BrushableChromosomeRuler } from "./component/ruler/brushable-chromosome";
+export { default as ChromosomeRuler } from "./component/ruler/chromosome";
 // sequences
 export * from "./component/sequence/gene-shapes";
 export { default as Gene } from "./component/sequence/gene";