diff --git a/tests/pdegen/mld_d_pde2d.f90 b/tests/pdegen/mld_d_pde2d.f90
index e1b1bde9..ce866028 100644
--- a/tests/pdegen/mld_d_pde2d.f90
+++ b/tests/pdegen/mld_d_pde2d.f90
@@ -247,7 +247,7 @@ contains
 
     m   = idim*idim
     n   = m
-    nnz = ((n*7)/(np))
+    nnz = 7*((n+np-1)/np)
     if(iam == psb_root_) write(psb_out_unit,'("Generating Matrix (size=",i0,")...")')n
     t0 = psb_wtime()
     select case(partition_)
diff --git a/tests/pdegen/mld_d_pde3d.f90 b/tests/pdegen/mld_d_pde3d.f90
index e8a85631..633d4fe0 100644
--- a/tests/pdegen/mld_d_pde3d.f90
+++ b/tests/pdegen/mld_d_pde3d.f90
@@ -263,7 +263,7 @@ contains
     
     m   = idim*idim*idim
     n   = m
-    nnz = ((n*7)/(np))
+    nnz = 7*((n+np-1)/np)
     if(iam == psb_root_) write(psb_out_unit,'("Generating Matrix (size=",i0,")...")')n
     t0 = psb_wtime()
     select case(partition_)
diff --git a/tests/pdegen/mld_s_pde2d.f90 b/tests/pdegen/mld_s_pde2d.f90
index 6d8abb14..a7fea3e5 100644
--- a/tests/pdegen/mld_s_pde2d.f90
+++ b/tests/pdegen/mld_s_pde2d.f90
@@ -247,7 +247,7 @@ contains
 
     m   = idim*idim
     n   = m
-    nnz = ((n*7)/(np))
+    nnz = 7*((n+np-1)/np)
     if(iam == psb_root_) write(psb_out_unit,'("Generating Matrix (size=",i0,")...")')n
     t0 = psb_wtime()
     select case(partition_)
diff --git a/tests/pdegen/mld_s_pde3d.f90 b/tests/pdegen/mld_s_pde3d.f90
index 26d318a7..1978fb81 100644
--- a/tests/pdegen/mld_s_pde3d.f90
+++ b/tests/pdegen/mld_s_pde3d.f90
@@ -263,7 +263,7 @@ contains
     
     m   = idim*idim*idim
     n   = m
-    nnz = ((n*7)/(np))
+    nnz = 7*((n+np-1)/np)
     if(iam == psb_root_) write(psb_out_unit,'("Generating Matrix (size=",i0,")...")')n
     t0 = psb_wtime()
     select case(partition_)