diff --git a/tools/trinity/run_de_analysis.xml b/tools/trinity/run_de_analysis.xml
index 930c1923f8a..aba245653c1 100644
--- a/tools/trinity/run_de_analysis.xml
+++ b/tools/trinity/run_de_analysis.xml
@@ -45,7 +45,7 @@
 
     ]]></command>
     <inputs>
-        <param format="tabular" name="matrix" argument="--matrix" type="data" label="Expression matrix" help="output of abundance_estimates_to_matrix tool"/>
+        <param format="tabular" name="matrix" argument="--matrix" type="data" label="Expression matrix" help="output of Build expression matrix - matrix of raw read counts (not normalized!)"/>
         <param format="tabular" name="samples" argument="--samples_file" type="data" label="Sample description" help="file describing samples and replicates"/>
 
         <conditional name="method_choice">