diff --git a/eno-core/src/main/java/fr/insee/eno/core/processing/common/steps/EnoAddResponseTimeSection.java b/eno-core/src/main/java/fr/insee/eno/core/processing/common/steps/EnoAddResponseTimeSection.java
index 55cfa433a..41d9cfc08 100644
--- a/eno-core/src/main/java/fr/insee/eno/core/processing/common/steps/EnoAddResponseTimeSection.java
+++ b/eno-core/src/main/java/fr/insee/eno/core/processing/common/steps/EnoAddResponseTimeSection.java
@@ -19,9 +19,9 @@
 public class EnoAddResponseTimeSection implements ProcessingStep<EnoQuestionnaire> {
 
     public static final String HOURS_VARIABLE_NAME = "HEURE_REMPL";
-    public static final String HOURS_VARIABLE_UNIT = "heures";
+    public static final String HOURS_VARIABLE_UNIT = "\"heures\"";
     public static final String MINUTES_VARIABLE_NAME = "MIN_REMPL";
-    public static final String MINUTES_VARIABLE_UNIT = "minutes";
+    public static final String MINUTES_VARIABLE_UNIT = "\"minutes\"";
     public static final String RESPONSE_TIME_SEQUENCE_ID = "TIME-SEQ";
     public static final String RESPONSE_TIME_SEQUENCE_LABEL = "\"Temps de réponse\"";
     public static final String HOURS_QUESTION_ID = "TIME-QUESTION-HEURE-REMPL";