diff --git a/backend/src/main/java/pdl/backend/Algorithm.java b/backend/src/main/java/pdl/backend/Algorithm.java
index a6b9242..e59987d 100644
--- a/backend/src/main/java/pdl/backend/Algorithm.java
+++ b/backend/src/main/java/pdl/backend/Algorithm.java
@@ -16,27 +16,28 @@ public class Algorithm {
 		this.parameters = new ArrayList<>();
 		switch (path) {
 			case "changeLuminosity":
-				Parameter param1 = new Parameter("delta", "", -255, 255, false);
+				Parameter param1 = new Parameter("delta", "delta", -255, 255, 1);
 				this.parameters.add(param1);
 				break;
 			case "histogram":
 				break;
 			case "colorFilter":
-				Parameter param2 = new Parameter("hue", "Teinte", 0, 360, false);
+				Parameter param2 = new Parameter("hue", "Teinte", 0, 359, 1);
 				this.parameters.add(param2);
 				break;
 			case "meanFilter":
-				Parameter param3 = new Parameter("size", "Taille du filtre", 1, 101, true);
+				Parameter param3 = new Parameter("size", "Taille du filtre", 1, 101, 2);
 				this.parameters.add(param3);
 				break;
 			case "gaussienFilter":
-				Parameter param4 = new Parameter("size", "Taille du filtre", 1, 101, true);
-				this.parameters.add(param4);
+				// TODO
+				// Parameter param4 = new Parameter("size", "Taille du filtre", 1, 101, 2);
+				// this.parameters.add(param4);
 				break;
 			case "contours":
 				break;
 			default:
-				throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "Invalid pass");
+				throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "Invalid path");
 
 		}
 	}
diff --git a/backend/src/main/java/pdl/backend/AlgorithmController.java b/backend/src/main/java/pdl/backend/AlgorithmController.java
index 85b88ea..3ec0955 100644
--- a/backend/src/main/java/pdl/backend/AlgorithmController.java
+++ b/backend/src/main/java/pdl/backend/AlgorithmController.java
@@ -31,14 +31,14 @@ public class AlgorithmController {
 		algorithms.add(algo);
 		algo = new Algorithm("Détection de contours", "contours");
 		algorithms.add(algo);
-		algo = new Algorithm("Histogramme", "histogram");
+		algo = new Algorithm("Égalisation d'histogramme", "histogram");
 		algorithms.add(algo);
 
 		ArrayNode nodes = mapper.createArrayNode();
 		for (Algorithm a : algorithms) {
 			ObjectNode objectNode = mapper.createObjectNode();
 			objectNode.put("name", a.getName());
-			objectNode.put("pass", a.getPath());
+			objectNode.put("path", a.getPath());
 			ArrayNode parameters = objectNode.putArray("parameters");
 			for (Parameter p : a.getParameters()) {
 				ObjectNode paramNode = mapper.createObjectNode();
@@ -46,7 +46,7 @@ public class AlgorithmController {
 				paramNode.put("displayName", p.getDisplayName());
 				paramNode.put("min", p.getMin());
 				paramNode.put("max", p.getMax());
-				paramNode.put("mustBeOdd", p.mustBeOdd());
+				paramNode.put("step", p.getStep());
 				parameters.add(paramNode);
 			}
 			nodes.add(objectNode);
diff --git a/backend/src/main/java/pdl/backend/Parameter.java b/backend/src/main/java/pdl/backend/Parameter.java
index 7df01c5..ad37078 100644
--- a/backend/src/main/java/pdl/backend/Parameter.java
+++ b/backend/src/main/java/pdl/backend/Parameter.java
@@ -5,14 +5,14 @@ public class Parameter {
 	private final String displayName;
 	private final int min;
 	private final int max;
-	private final boolean mustBeOdd;
+	private final int step;
 
-	public Parameter(String name, String displayName, int min, int max, boolean mustBeOdd) {
+	public Parameter(String name, String displayName, int min, int max, int step) {
 		this.name = name;
 		this.displayName = displayName;
 		this.max = max;
 		this.min = min;
-		this.mustBeOdd = mustBeOdd;
+		this.step = step;
 	}
 
 	public String getName() {
@@ -31,7 +31,7 @@ public class Parameter {
 		return this.max;
 	}
 
-	public boolean mustBeOdd() {
-		return this.mustBeOdd;
+	public int getStep() {
+		return this.step;
 	}
 }