diff --git a/src/main/java/org/apache/commons/math3/exception/util/LocalizedFormats.java b/src/main/java/org/apache/commons/math3/exception/util/LocalizedFormats.java
index 04edd0b46..304c2fa35 100644
--- a/src/main/java/org/apache/commons/math3/exception/util/LocalizedFormats.java
+++ b/src/main/java/org/apache/commons/math3/exception/util/LocalizedFormats.java
@@ -133,7 +133,7 @@ public enum LocalizedFormats implements Localizable {
     DIMENSION("dimension ({0})"), /* keep */
     INSUFFICIENT_OBSERVED_POINTS_IN_SAMPLE("sample contains {0} observed points, at least {1} are required"),
     INSUFFICIENT_ROWS_AND_COLUMNS("insufficient data: only {0} rows and {1} columns."),
-    INTEGRATION_METHOD_NEEDS_AT_LEAST_TWO_PREVIOUS_POINTS("{0} method needs at least two previous points"),
+    INTEGRATION_METHOD_NEEDS_AT_LEAST_TWO_PREVIOUS_POINTS("multistep method needs at least {0} previous steps, got {1}"),
     INTERNAL_ERROR("internal error, please fill a bug report at {0}"),
     INVALID_BINARY_DIGIT("invalid binary digit: {0}"),
     INVALID_BINARY_CHROMOSOME("binary mutation works on BinaryChromosome only"),
diff --git a/src/main/resources/assets/org/apache/commons/math3/exception/util/LocalizedFormats_fr.properties b/src/main/resources/assets/org/apache/commons/math3/exception/util/LocalizedFormats_fr.properties
index de0a771f2..7a18b8fde 100644
--- a/src/main/resources/assets/org/apache/commons/math3/exception/util/LocalizedFormats_fr.properties
+++ b/src/main/resources/assets/org/apache/commons/math3/exception/util/LocalizedFormats_fr.properties
@@ -105,7 +105,7 @@ INSUFFICIENT_DIMENSION = dimension {0} insuffisante, elle devrait \u00eatre au m
 DIMENSION = dimension ({0})
 INSUFFICIENT_OBSERVED_POINTS_IN_SAMPLE = l''\u00e9chantillon ne contient que {0} points alors qu''au moins {1} sont n\u00e9cessaires
 INSUFFICIENT_ROWS_AND_COLUMNS = donn\u00e9es insuffisantes : seulement {0} lignes et {1} colonnes.
-INTEGRATION_METHOD_NEEDS_AT_LEAST_TWO_PREVIOUS_POINTS = la m\u00e9thode {0} n\u00e9cessite au moins deux points pr\u00e9c\u00e9dents
+INTEGRATION_METHOD_NEEDS_AT_LEAST_TWO_PREVIOUS_POINTS = les m\u00e9thodes multi-pas n\u00e9cessitent au moins {0} pas pr\u00e9c\u00e9dents, il y en a {1}
 INTERNAL_ERROR = erreur interne, veuillez signaler l''erreur \u00e0 {0}
 INVALID_BINARY_DIGIT = chiffre binaire invalide : {0}
 INVALID_BINARY_CHROMOSOME = la mutation binaire ne fonctionne qu''avec BinaryChromosome