diff --git a/source/commands/phylodiversitycommand.h b/source/commands/phylodiversitycommand.h
index 402da5a5..1585042e 100644
--- a/source/commands/phylodiversitycommand.h
+++ b/source/commands/phylodiversitycommand.h
@@ -95,7 +95,7 @@ static DWORD WINAPI MyPhyloDivThreadFunction(LPVOID lpParam){
 		vector<string> mGroups = pDataArray->m->getGroups();
         
 		for (int l = 0; l < pDataArray->numIters; l++) {
-            m->mothurRandomShuffle(pDataArray->randomLeaf);
+            pDataArray->m->mothurRandomShuffle(pDataArray->randomLeaf);
             
             //initialize counts
             map<string, int> counts;