diff --git a/base/serial/psb_dipcoo2csc.f90 b/base/serial/psb_dipcoo2csc.f90
index 674471ad..34e96f43 100644
--- a/base/serial/psb_dipcoo2csc.f90
+++ b/base/serial/psb_dipcoo2csc.f90
@@ -74,7 +74,12 @@ subroutine psb_dipcoo2csc(a,info,clshr)
   call psb_fixcoo(a,info,idir=1)
   nc  = a%k
   nza = a%infoa(psb_nnz_)
-  allocate(iaux(nc+1))
+  allocate(iaux(max(nc+1,1)),stat=info)
+  if (info /= 0) then 
+    info=4025
+    call psb_errpush(info,name,a_err='integer',i_err=(/max(nc+1,1),0,0,0,0/))
+    goto 9999      
+  end if
   if(debug) write(0,*)'DIPCOO2CSC: out of fixcoo',nza,nc,size(a%ia2),size(iaux)
 
   call psb_transfer(a%ia2,itemp,info)
diff --git a/base/serial/psb_dipcoo2csr.f90 b/base/serial/psb_dipcoo2csr.f90
index c765dd9c..50fbea8e 100644
--- a/base/serial/psb_dipcoo2csr.f90
+++ b/base/serial/psb_dipcoo2csr.f90
@@ -76,7 +76,8 @@ subroutine psb_dipcoo2csr(a,info,rwshr)
   nza = a%infoa(psb_nnz_)
   allocate(iaux(max(nr+1,1)),stat=info)
   if (info /= 0) then 
-    call psb_errpush(4010,name,a_err='Allocate')
+    info=4025
+    call psb_errpush(info,name,a_err='integer',i_err=(/max(nr+1,1),0,0,0,0/))
     goto 9999      
   end if
 
diff --git a/base/serial/psb_dipcsr2coo.f90 b/base/serial/psb_dipcsr2coo.f90
index 0bb8b6dd..c71571ce 100644
--- a/base/serial/psb_dipcsr2coo.f90
+++ b/base/serial/psb_dipcsr2coo.f90
@@ -63,10 +63,11 @@ Subroutine psb_dipcsr2coo(a,info)
 
   nr  = a%m 
   nza = a%ia2(nr+1) - 1
-  allocate(iaux(nza),stat=info)
-  if (info /=0) then 
-    write(0,*) 'Failed allocation ',info, nza
-    return
+  allocate(iaux(max(nza,1)),stat=info)
+  if (info /= 0) then 
+    info=4025
+    call psb_errpush(info,name,a_err='integer',i_err=(/max(nza,1),0,0,0,0/))
+    goto 9999      
   end if
 !!$  write(0,*) 'ipcsr2coo ',a%m      
   call psb_transfer(a%ia2,itemp,info)
diff --git a/base/serial/psb_zipcoo2csc.f90 b/base/serial/psb_zipcoo2csc.f90
index bdac4847..05cd9a43 100644
--- a/base/serial/psb_zipcoo2csc.f90
+++ b/base/serial/psb_zipcoo2csc.f90
@@ -74,7 +74,12 @@ subroutine psb_zipcoo2csc(a,info,clshr)
   call psb_fixcoo(a,info,idir=1)
   nc  = a%k
   nza = a%infoa(psb_nnz_)
-  allocate(iaux(nc+1))
+  allocate(iaux(max(nc+1,1)),stat=info)
+  if (info /= 0) then 
+    info=4025
+    call psb_errpush(info,name,a_err='integer',i_err=(/max(nc+1,1),0,0,0,0/))
+    goto 9999      
+  end if
   if(debug) write(0,*)'DIPCOO2CSC: out of fixcoo',nza,nc,size(a%ia2),size(iaux)
 
   call psb_transfer(a%ia2,itemp,info)
diff --git a/base/serial/psb_zipcoo2csr.f90 b/base/serial/psb_zipcoo2csr.f90
index f325911f..bc0e7888 100644
--- a/base/serial/psb_zipcoo2csr.f90
+++ b/base/serial/psb_zipcoo2csr.f90
@@ -74,9 +74,10 @@ subroutine psb_zipcoo2csr(a,info,rwshr)
   call psb_fixcoo(a,info)
   nr  = a%m 
   nza = a%infoa(psb_nnz_)
-  allocate(iaux(nr+1),stat=info)
+  allocate(iaux(max(nr+1,1)),stat=info)
   if (info /= 0) then 
-    call psb_errpush(4010,name,a_err='Allocate')
+    info=4025
+    call psb_errpush(info,name,a_err='integer',i_err=(/max(nr+1,1),0,0,0,0/))
     goto 9999      
   end if
 
diff --git a/base/serial/psb_zipcsr2coo.f90 b/base/serial/psb_zipcsr2coo.f90
index a0fe0e3d..32d4a6af 100644
--- a/base/serial/psb_zipcsr2coo.f90
+++ b/base/serial/psb_zipcsr2coo.f90
@@ -63,10 +63,11 @@ Subroutine psb_zipcsr2coo(a,info)
 
   nr  = a%m 
   nza = a%ia2(nr+1) - 1
-  allocate(iaux(nza),stat=info)
-  if (info /=0) then 
-    write(0,*) 'Failed allocation ',info, nza
-    return
+  allocate(iaux(max(nza,1)),stat=info)
+  if (info /= 0) then 
+    info=4025
+    call psb_errpush(info,name,a_err='integer',i_err=(/max(nza,1),0,0,0,0/))
+    goto 9999      
   end if
 !!$  write(0,*) 'ipcsr2coo ',a%m      
   call psb_transfer(a%ia2,itemp,info)