diff --git a/hibernate-core/src/main/java/org/hibernate/query/internal/ParameterMetadataImpl.java b/hibernate-core/src/main/java/org/hibernate/query/internal/ParameterMetadataImpl.java
index a28d6f51d6..1a17b914a3 100644
--- a/hibernate-core/src/main/java/org/hibernate/query/internal/ParameterMetadataImpl.java
+++ b/hibernate-core/src/main/java/org/hibernate/query/internal/ParameterMetadataImpl.java
@@ -109,7 +109,7 @@ public class ParameterMetadataImpl implements ParameterMetadata {
 	/**
 	 * Get the descriptor for an ordinal parameter given its position
 	 *
-	 * @param position The position (1 based)
+	 * @param position The position (0 based)
 	 *
 	 * @return The ordinal parameter descriptor
 	 *
@@ -119,7 +119,7 @@ public class ParameterMetadataImpl implements ParameterMetadata {
 		if ( position < 0 || position >= ordinalDescriptors.length ) {
 			throw new QueryParameterException(
 					"Position beyond number of declared ordinal parameters. " +
-							"Remember that ordinal parameters are 1-based! Position: " + position
+							"Remember that ordinal parameters are 0-based! Position: " + position
 			);
 		}
 		return ordinalDescriptors[position];
diff --git a/hibernate-core/src/main/java/org/hibernate/query/internal/QueryParameterBindingsImpl.java b/hibernate-core/src/main/java/org/hibernate/query/internal/QueryParameterBindingsImpl.java
index d71c9924aa..4a6c436a96 100644
--- a/hibernate-core/src/main/java/org/hibernate/query/internal/QueryParameterBindingsImpl.java
+++ b/hibernate-core/src/main/java/org/hibernate/query/internal/QueryParameterBindingsImpl.java
@@ -208,7 +208,6 @@ public class QueryParameterBindingsImpl implements QueryParameterBindings {
 					if ( position < positionalParameterBindings.size() ) {
 						binding = positionalParameterBindings.get( position );
 						if ( binding == null ) {
-							// metadata parameters are 1-based
 							binding = makeBinding( parameterMetadata.getQueryParameter( position ) );
 							positionalParameterBindings.set( position, binding );
 						}
@@ -217,7 +216,6 @@ public class QueryParameterBindingsImpl implements QueryParameterBindings {
 						for ( int i = 0; i < position - positionalParameterBindings.size(); i++ ) {
 							positionalParameterBindings.add( null );
 						}
-						// metadata parameters are 1-based
 						QueryParameter queryParameter = parameterMetadata.getQueryParameter( position );
 						binding = makeBinding( queryParameter );
 						positionalParameterBindings.add( binding );