diff --git a/definitions/grib1/section.1.def b/definitions/grib1/section.1.def
index 32ac08292..2bda52ec7 100644
--- a/definitions/grib1/section.1.def
+++ b/definitions/grib1/section.1.def
@@ -313,31 +313,7 @@ alias time.stepType=stepType;
 
 # ECC-457: GRIB1 to GRIB2 conversion
 concept_nofail stepTypeForConversion (unknown, "stepTypeForConversion.def", conceptsDir2, conceptsDir1);
-if (stepTypeForConversion is "accum" ) {
-   if (productDefinitionTemplateNumber == 1) {
-      alias productDefinitionTemplateNumber=eleven;
-   }
-   else {
-      alias productDefinitionTemplateNumber=eight;
-   }
-}
-if (stepTypeForConversion is "max" ) {
-   if (productDefinitionTemplateNumber == 1) {
-      alias productDefinitionTemplateNumber=eleven;
-   }
-   else {
-      alias productDefinitionTemplateNumber=eight;
-   }
-}
-if (stepTypeForConversion is "min" ) {
-   if (productDefinitionTemplateNumber == 1) {
-      alias productDefinitionTemplateNumber=eleven;
-   }
-   else {
-      alias productDefinitionTemplateNumber=eight;
-   }
-}
-if (stepTypeForConversion is "avg" ) {
+if (stepTypeForConversion is "accum" || stepTypeForConversion is "max" || stepTypeForConversion is "min" || stepTypeForConversion is "avg") {
    if (productDefinitionTemplateNumber == 1) {
       alias productDefinitionTemplateNumber=eleven;
    }