diff --git a/tools/stress/src/org/apache/cassandra/stress/settings/OptionRatioDistribution.java b/tools/stress/src/org/apache/cassandra/stress/settings/OptionRatioDistribution.java
index 67cd1a9f3c..0bd1bfa472 100644
--- a/tools/stress/src/org/apache/cassandra/stress/settings/OptionRatioDistribution.java
+++ b/tools/stress/src/org/apache/cassandra/stress/settings/OptionRatioDistribution.java
@@ -87,7 +87,7 @@ public class OptionRatioDistribution extends Option
             return new DelegateFactory(delegate.get(), divisor);
         if (defaultSpec == null)
             return null;
-        OptionRatioDistribution sub = new OptionRatioDistribution(delegate.prefix, null, null, true);
+        OptionRatioDistribution sub = new OptionRatioDistribution("", null, null, true);
         if (!sub.accept(defaultSpec))
             throw new IllegalStateException("Invalid default spec: " + defaultSpec);
         return sub.get();
diff --git a/tools/stress/src/org/apache/cassandra/stress/settings/SettingsInsert.java b/tools/stress/src/org/apache/cassandra/stress/settings/SettingsInsert.java
index ac3fc7cfb3..e999e4b468 100644
--- a/tools/stress/src/org/apache/cassandra/stress/settings/SettingsInsert.java
+++ b/tools/stress/src/org/apache/cassandra/stress/settings/SettingsInsert.java
@@ -48,6 +48,8 @@ public class SettingsInsert implements Serializable
         this.selectRatio = options.selectRatio.get();
         this.rowPopulationRatio = options.rowPopulationRatio.get();
 
+
+
         this.batchType = !options.batchType.setByUser() ? null : BatchStatement.Type.valueOf(options.batchType.value());
     }
 
@@ -60,7 +62,7 @@ public class SettingsInsert implements Serializable
         final OptionDistribution partitions = new OptionDistribution("partitions=", null, "The number of partitions to update in a single batch", false);
         final OptionSimple batchType = new OptionSimple("batchtype=", "unlogged|logged|counter", null, "Specify the type of batch statement (LOGGED, UNLOGGED or COUNTER)", false);
         final OptionRatioDistribution selectRatio = new OptionRatioDistribution("select-ratio=", null, "The uniform probability of visiting any CQL row in the generated partition", false);
-        final OptionRatioDistribution rowPopulationRatio = new OptionRatioDistribution("row-population-ratio=", null, "The percent of a given rows columns to populate", false);
+        final OptionRatioDistribution rowPopulationRatio = new OptionRatioDistribution("row-population-ratio=", "fixed(1)/1", "The percent of a given rows columns to populate", false);
 
         @Override
         public List<? extends Option> options()