diff --git a/src/hydstatus.c b/src/hydstatus.c
index 4b4dc4b..3d7c106 100644
--- a/src/hydstatus.c
+++ b/src/hydstatus.c
@@ -413,7 +413,7 @@ void  tankstatus(Project *pr, int k, int n1, int n2)
     Hydraul *hyd = &pr->hydraul;
 
     int   i, n;
-    double h, q;
+    double q;
     Stank *tank;
     Slink *link = &net->Link[k];