diff --git a/src/project.c b/src/project.c
index 6fae82c..fb99cf0 100644
--- a/src/project.c
+++ b/src/project.c
@@ -253,6 +253,8 @@ void initpointers(Project *pr)
     pr->hydraul.P = NULL;
     pr->hydraul.Y = NULL;
     pr->hydraul.Xflow = NULL;
+    pr->hydraul.DemandFlow = NULL;
+    pr->hydraul.EmitterFlow = NULL;
 
     pr->quality.NodeQual = NULL;
     pr->quality.PipeRateCoeff = NULL;